This is the documentation for the Property Ontology. All instances of the Property class are listed here. The Property namespace contains all qualitative, standardized, and quantitative property instances. Quantitative Properties map to the Quantity Kind class in QUDT. To reference the Quantity documentation from the CSDMS Standard Names, please visit the CSN Documentation.
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Documentation last generated on 20190429 13:09 EDT.
This instance is a narrower concept derived from acceleration_time.
This instance has the following attributes:
This instance quantifies the process acceleration.
This instance has the dimensional units string T.
This instance is a narrower concept derived from attenuation_depth.
This instance quantifies the process attenuation.
This instance has the dimensional units string L.
This instance is a narrower concept derived from attenuation_depth.
This instance quantifies the process attenuation.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
In optics and lens design, the Abbe number, also known as the Vnumber or constringence of a transparent material, is a measure of the material's dispersion (variation of refractive index versus wavelength), with high values of V indicating low dispersion. It is named after Ernst Abbe (1840–1905), the German physicist who defined it.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Ablation is removal of material from the surface of an object by vaporization, chipping, or other erosive processes. Examples of ablative materials are described below, and include spacecraft material for ascent and atmospheric reentry, ice and snow in glaciology, biological tissues in medicine and passive fire protection materials.
This instance quantifies the process ablation.
This instance has the dimensional units string L^2 M T^1.
Alternative labels for this instance are: intrinsic_permeability.
This instance is a narrower concept derived from permeability.
This instance has the dimensional units string L^2.
This instance has a related Wikipedia page. Short extract:
In electromagnetism, absolute permittivity, often simply called permittivity, usually denoted by the Greek letter ε (epsilon), is the measure of capacitance that is encountered when forming an electric field in a particular medium. More specifically, permittivity describes the amount of charge needed to generate one unit of electric flux in a particular medium.
This instance is a narrower concept derived from permittivity.
This instance has the dimensional units string L^3 M^1 T^4 I^2.
This instance has a related Wikipedia page. Short extract:
Salinity () is the saltiness or amount of salt dissolved in a body of water, called saline water (see also soil salinity). This is usually measured in
g
salt
k
g
sea
water
{\displaystyle {\frac {g\ {\textrm {salt}}}{kg\ {\textrm {sea}}\ {\textrm {water}}}}}
(note that this is technically dimensionless).
This instance is a narrower concept derived from salinity.
This instance has the dimensional units string dimensionless.
This instance has a related Wikipedia page. Short extract:
"Optical density" redirects here. "Optical density" can also refer to index of refraction.
This instance has the dimensional units string L^1.
This instance is a narrower concept derived from energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
Alternative labels for this instance are: absorption_coefficient.
This instance has a related Wikipedia page. Short extract:
Absorptance of the surface of a material is its effectiveness in absorbing radiant energy. It is the ratio of the absorbed to the incident radiant power.
This instance has the dimensional units string dimensionless.
This instance has a related Wikipedia page. Short extract:
In physics, acceleration is the rate of change of velocity of an object with respect to time. An object's acceleration is the net result of all forces acting on the object, as described by Newton's Second Law.
This instance has the dimensional units string L T^2.
This instance is a narrower concept derived from time.
This instance quantifies the process acceleration.
This instance has the dimensional units string T.
This instance quantifies the process accumulation.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process accumulation.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from amountpervolume_capacity.
This instance has the dimensional units string L^3.
This instance is a narrower concept derived from masspertime_capacity.
This instance has the dimensional units string M T^1.
This instance is a narrower concept derived from masspervolume_capacity.
This instance has the dimensional units string L^3 M.
This instance has the dimensional units string L^3 M.
This instance has a related Wikipedia page. Short extract:
Acoustic impedance and specific acoustic impedance are measures of the opposition that a system presents to the acoustic flow resulting from an acoustic pressure applied to the system. The SI unit of acoustic impedance is the pascal second per cubic metre (Pa·s/m3) or the rayl per square metre (rayl/m2), while that of specific acoustic impedance is the pascal second per metre (Pa·s/m) or the rayl.
This instance is a narrower concept derived from impedance.
This instance has the dimensional units string L^4 M T^1.
This instance has a related Wikipedia page. Short extract:
In chemistry and physics, activation energy is the energy which must be provided to a chemical or nuclear system with potential reactants to result in: a chemical reaction, nuclear reaction, or various other physical phenomena.The activation energy (Ea) of a reaction is measured in joules (J) and or kilojoules per mole (kJ/mol) or kilocalories per mole (kcal/mol).Activation energy can be thought of as the magnitude of the potential barrier (sometimes called the energy barrier) separating minima of the potential energy surface pertaining to the initial and final thermodynamic state. For a chemical reaction, or division to proceed at a reasonable rate, the temperature of the system should be high enough such that there exists an appreciable number of molecules with translational energy equal to or greater than the activation energy.
This instance is a narrower concept derived from energy.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from radioactivity.
This instance has the dimensional units string M^1 T^1.
This instance is a narrower concept derived from radioactivity.
This instance has the dimensional units string L^3 T^1.
This instance has a related Wikipedia page. Short extract:
An activity coefficient is a factor used in thermodynamics to account for deviations from ideal behaviour in a mixture of chemical substances. In an ideal mixture, the microscopic interactions between each pair of chemical species are the same (or macroscopically equivalent, the enthalpy change of solution and volume variation in mixing is zero) and, as a result, properties of the mixtures can be expressed directly in terms of simple concentrations or partial pressures of the substances present e.g.
This instance has the dimensional units string none.
Alternative labels for this instance are: percent_modern.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass.
This instance quantifies the process addition.
This instance has the dimensional units string M.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process addition.
This instance has the dimensional units string L^2 M T^1.
Alternative labels for this instance are: adiabatic.
This instance is a narrower concept derived from temperature_lapse_rate.
This instance has the dimensional units string L^1 O.
This instance quantifies the process advance.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from energy_flux.
This instance quantifies the process advection.
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from conductance.
This instance has the dimensional units string L T^1.
Alternative labels for this instance are: drag.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers (or surfaces) or a fluid and a solid surface.
This instance is a narrower concept derived from resistance.
This instance has the dimensional units string L M T^2.
This instance has a related Wikipedia page. Short extract:
Affinity may refer to:
This instance has a related Wikipedia page. Short extract:
Age or AGE may refer to:
This instance has the dimensional units string T.
This instance is a narrower concept derived from pressure_head.
This instance has the following attributes:
This instance has the dimensional units string L.
Alternative labels for this instance are: reflection_coefficient.
This instance has a related Wikipedia page. Short extract:
Albedo () (Latin: albedo, meaning 'whiteness') is the measure of the diffuse reflection of solar radiation out of the total solar radiation received by an astronomical body (e.g. a planet like Earth).
This instance has the dimensional units string none.
Alternative labels for this instance are: agp.
This instance is a narrower concept derived from potential.
This instance has the dimensional units string none.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
Alternative labels for this instance are: geopotential_height.
This instance has a related Wikipedia page. Short extract:
Altitude or height (sometimes known as 'depth') is defined based on the context in which it is used (aviation, geometry, geographical survey, sport, atmospheric pressure, and many more). As a general definition, altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object.
This instance has the dimensional units string L.
This instance has the dimensional units string none.
This instance is a narrower concept derived from capacity.
This instance has the dimensional units string L^3.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string L^3.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period). There are various definitions of amplitude (see below), which are all functions of the magnitude of the difference between the variable's extreme values.
This instance has a related Wikipedia page. Short extract:
In plane geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
Angles formed by two rays lie in a plane, but this plane does not have to be a Euclidean plane.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Angstrom exponent or Ångström exponent is a parameter that describes how the optical thickness of an aerosol typically depends on the wavelength of the light.
This instance has the dimensional units string none.
Alternative labels for this instance are: radian_frequency, pulsatance, circular_frequency, orbital_frequency, radial_frequency.
This instance has a related Wikipedia page. Short extract:
In physics, angular frequency ω (also referred to by the terms angular speed, radial frequency, circular frequency, orbital frequency, radian frequency, and pulsatance) is a scalar measure of rotation rate. It refers to the angular displacement per unit time (e.g., in rotation) or the rate of change of the phase of a sinusoidal waveform (e.g., in oscillations and waves), or as the rate of change of the argument of the sine function.
This instance has the dimensional units string T^1.
Alternative labels for this instance are: rotational_momentum.
This instance has a related Wikipedia page. Short extract:
In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum. It is an important quantity in physics because it is a conserved quantity—the total angular momentum of a closed system remains constant.
This instance is a narrower concept derived from momentum.
This instance has the dimensional units string L^2 M T^1.
Alternative labels for this instance are: angular_frequency, radial_frequency, pulsatance, radian_frequency, curcular_frequency, orbital_frequency.
This instance has a related Wikipedia page. Short extract:
In physics, angular frequency ω (also referred to by the terms angular speed, radial frequency, circular frequency, orbital frequency, radian frequency, and pulsatance) is a scalar measure of rotation rate. It refers to the angular displacement per unit time (e.g., in rotation) or the rate of change of the phase of a sinusoidal waveform (e.g., in oscillations and waves), or as the rate of change of the argument of the sine function.
This instance has the dimensional units string T^1.
This instance has a related Wikipedia page. Short extract:
In physics, angular velocity refers to how fast an object rotates or revolves relative to another point, i.e. how fast the angular position or orientation of an object changes with time.
This instance is a narrower concept derived from velocity.
This instance has the dimensional units string T^1.
This instance has a related Wikipedia page. Short extract:
In the physical sciences, the wavenumber (also wave number or repetency) is the spatial frequency of a wave, measured in cycles per unit distance or radians per unit distance. Whereas temporal frequency can be thought of as the number of waves per unit time, wavenumber is the number of waves per unit distance.
This instance is a narrower concept derived from wavenumber.
This instance has the dimensional units string L^1.
This instance has the dimensional units string none.
This instance has the dimensional units string L.
This instance has the dimensional units string L^3 M.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string O.
This instance has the dimensional units string L^2.
This instance has the dimensional units string none.
This instance has the dimensional units string O.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
The apparent magnitude (m) of an astronomical object is a number that is a measure of its brightness as seen by an observer on Earth. The magnitude scale is logarithmic.
This instance has the dimensional units string none.
This instance is a narrower concept derived from dynamic_viscosity.
This instance has the dimensional units string L^1 M T^1.
This instance is a narrower concept derived from depth.
This instance quantifies the process application.
This instance has the dimensional units string L.
This instance is a narrower concept derived from cost_fraction.
This instance has the following attributes:
This instance quantifies the process application.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance quantifies the process approach.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In viscous fluid dynamics, the Archimedes number (Ar) (not to be confused with Archimedes' constant, π), named after the ancient Greek scientist Archimedes is used to determine the motion of fluids due to density differences. It is a dimensionless number, the ratio of gravitational forces to viscous forces and has the form:
A
r
=
g
L
3
ρ
ℓ
(
ρ
−
ρ
ℓ
)
μ
2
{\displaystyle \mathrm {Ar} ={\frac {gL^{3}\rho _{\ell }(\rho \rho _{\ell })}{\mu ^{2}}}}
where:
g
{\displaystyle g}
is the local external field (for example gravitational acceleration), m/s2,
ρ
ℓ
{\displaystyle \rho _{\ell }}
is the density of the fluid, kg/m3,
ρ
{\displaystyle \rho }
is the density of the body, kg/m3,
μ
{\displaystyle \mu }
is the dynamic viscosity, kg/ms,
L
{\displaystyle L}
is the characteristic length of body, m.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Area is the quantity that expresses the extent of a twodimensional figure or shape, or planar lamina, in the plane. Surface area is its analog on the twodimensional surface of a threedimensional object.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from shape_factor.
This instance has the dimensional units string none.
This instance is a narrower concept derived from shape_factor.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from type.
This instance has a related Wikipedia page. Short extract:
In physical chemistry, the Arrhenius equation is a formula for the temperature dependence of reaction rates. The equation was proposed by Svante Arrhenius in 1889, based on the work of Dutch chemist Jacobus Henricus van 't Hoff who had noted in 1884 that van 't Hoff equation for the temperature dependence of equilibrium constants suggests such a formula for the rates of both forward and reverse reactions.
This instance has the dimensional units string none.
This instance is a narrower concept derived from time.
This instance has the dimensional units string T.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from contact_area.
This instance has the dimensional units string L^2.
This instance has a related Wikipedia page. Short extract:
In physics and chemistry, the atomic mass constant, mu, is one twelfth of the mass of an unbound atom of carbon12 at rest and in its ground state. It serves to define the atomic mass unit and is, by definition, equal to 1 u.
This instance has the dimensional units string M.
This instance is a narrower concept derived from mass_ratio.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Relative atomic mass (symbol: Ar) or atomic weight is a dimensionless physical quantity defined as the ratio of the average mass of atoms of a chemical element in a given sample to the atomic mass constant. The atomic mass constant (symbol: mu) is defined as being 1/12 of the mass of a carbon12 atom.
This instance is a narrower concept derived from weight.
This instance has the following attributes:
This instance has the dimensional units string L M T^2.
This instance has a related Wikipedia page. Short extract:
The enthalpy of atomization (also atomisation in British spelling) is the enthalpy change that accompanies the total separation of all atoms in a chemical substance (either a chemical element or a chemical compound). This is often represented by the symbol ΔatHo or ΔHato.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process atomization.
This instance has the dimensional units string L^2 M T^2.
Alternative labels for this instance are: narrow_beam_attenuation_coefficient, extinction_coefficient.
This instance has a related Wikipedia page. Short extract:
For "attenuation coefficient" as it applies to electromagnetic theory and telecommunications see Attenuation constant. For the "mass attenuation coefficient", see Mass attenuation coefficient.The attenuation coefficient or narrowbeam attenuation coefficient characterizes how easily a volume of material can be penetrated by a beam of light, sound, particles, or other energy or matter.
This instance quantifies the process attenuation.
This instance has the dimensional units string L^1.
This instance is a narrower concept derived from depth.
This instance quantifies the process attenuation.
This instance has the dimensional units string L.
This instance is a narrower concept derived from activity.
This instance has the dimensional units string none.
This instance is a narrower concept derived from volume_fraction.
This instance has the dimensional units string none.
This instance is a narrower concept derived from liquidity.
This instance has the dimensional units string none.
This instance is a narrower concept derived from volume_fraction.
This instance has the dimensional units string none.
This instance is a narrower concept derived from plasticity.
This instance has the dimensional units string none.
This instance is a narrower concept derived from volume_fraction.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Atwood number (A) is a dimensionless number in fluid dynamics used in the study of hydrodynamic instabilities in density stratified flows.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In geography, latitude is a geographic coordinate that specifies the north–south position of a point on the Earth's surface. Latitude is an angle (defined below) which ranges from 0° at the Equator to 90° (North or South) at the poles.
This instance is a narrower concept derived from latitude.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance is a narrower concept derived from energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from distance.
This instance has the dimensional units string L.
This instance quantifies the process denitrification. This instance quantifies the process emission.
This instance has the dimensional units string M T^1.
This instance quantifies the process immobilization.
This instance has the dimensional units string M T^1.
This instance quantifies the process mineralization.
This instance has the dimensional units string M T^1.
This instance quantifies the process emission.
This instance has the dimensional units string M T^1.
This instance quantifies the process leaching.
This instance has the dimensional units string M T^1.
This instance quantifies the process emission. This instance quantifies the process nitrification.
This instance has the dimensional units string M T^1.
This instance has the dimensional units string O.
This instance is a narrower concept derived from distance.
This instance has the dimensional units string L.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
The Avogadro constant, named after scientist Amedeo Avogadro, is the number of constituent particles, usually molecules, atoms or ions that are contained in the amount of substance given by one mole. It is the proportionality factor that relates the molar mass of a substance to the mass of a sample, is designated with the symbol NA or L, and has the value 6.022140857(74)×1023 mol−1 in the International System of Units (SI).Previous definitions of chemical quantity involved the Avogadro number, a historical term closely related to the Avogadro constant, but defined differently: the Avogadro number was initially defined by Jean Baptiste Perrin as the number of atoms in one grammolecule of atomic hydrogen, meaning one gram of hydrogen.
This instance has the dimensional units string N^1.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance quantifies the process impaction.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance quantifies the process drifting.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from tangentvector.
This instance has the dimensional units string none.
This instance is a narrower concept derived from energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
This instance has a related Wikipedia page. Short extract:
The Bagnold number (Ba) is the ratio of grain collision stresses to viscous fluid stresses in a granular flow with interstitial Newtonian fluid, first identified by Ralph Alger Bagnold.The Bagnold number is defined by
B
a
=
ρ
d
2
λ
1
/
2
γ
˙
μ
{\displaystyle \mathrm {Ba} ={\frac {\rho d^{2}\lambda ^{1/2}{\dot {\gamma }}}{\mu }}}
,where
ρ
{\displaystyle \rho }
is the particle density,
d
{\displaystyle d}
is the grain diameter,
γ
˙
{\displaystyle {\dot {\gamma }}}
is the shear rate and
μ
{\displaystyle \mu }
is the dynamic viscosity of the interstitial fluid. The parameter
λ
{\displaystyle \lambda }
is known as the linear concentration, and is given by
λ
=
1
(
ϕ
0
/
ϕ
)
1
3
−
1
{\displaystyle \lambda ={\frac {1}{\left(\phi _{0}/\phi \right)^{\frac {1}{3}}1}}}
,where
ϕ
{\displaystyle \phi }
is the solids fraction and
ϕ
0
{\displaystyle \phi _{0}}
is the maximum possible concentration (see random close packing).
This instance has the dimensional units string none.
This instance is a narrower concept derived from width.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from mass_flux.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from volume_flux.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from attenuation_coefficient.
This instance quantifies the process attenuation.
This instance has the dimensional units string L^1.
This instance has a related Wikipedia page. Short extract:
There are two different Bejan numbers (Be), used in the scientific domains of thermodynamics and fluid mechanics. Bejan numbers are named after Duke University professor Adrian Bejan.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In mathematics, the binomial coefficients are the positive integers that occur as coefficients in the binomial theorem. Commonly, a binomial coefficient is indexed by a pair of integers n ≥ k ≥ 0 and is written
(
n
k
)
.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Biot number (Bi) is a dimensionless quantity used in heat transfer calculations. It is named after the eighteenth century French physicist JeanBaptiste Biot (1774–1862), and gives a simple index of the ratio of the heat transfer resistances inside of a body and at the surface of a body.
This instance has the dimensional units string none.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from albedo.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Blake number in fluid mechanics is a nondimensional number showing the ratio of inertial force to viscous force.
It is used in momentum transfer in general and in particular for flow of a fluid through beds of solids.
This instance has the dimensional units string none.
This instance is a narrower concept derived from speed.
This instance quantifies the process blowing.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from albedo.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Bodenstein number (abbreviated Bo, named after Max Bodenstein) is a dimensionless parameter in chemical reaction engineering, which describes the ratio of the amount of substance introduced by convection to that introduced by diffusion. Hence, it characterises the backmixing in a system and allows statements whether and how much volume elements or substances within a chemical reactor mix due to the prevalent currents.
This instance has the dimensional units string none.
This instance is a narrower concept derived from force_term.
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
The Bohr radius (a0 or rBohr) is a physical constant, approximately equal to the most probable distance between the nucleus and the electron in a hydrogen atom in its ground state. It is named after Niels Bohr, due to its role in the Bohr model of an atom.
This instance has the dimensional units string L.
Alternative labels for this instance are: boilingpoint.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
The Boltzmann constant (kB or k) is a physical constant named after its discoverer, Ludwig Boltzmann, which relates the average relative kinetic energy of particles in a gas with the temperature of the gas and occurs in Planck's law of blackbody radiation and in Boltzmann's entropy formula.
It is the gas constant R divided by the Avogadro constant NA:
k
=
R
N
A
.
This instance has the dimensional units string L^2 M O^1 T^2.
This instance is a narrower concept derived from velocity.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from vorticity.
This instance has the dimensional units string T^2.
This instance is a narrower concept derived from albedo.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Bowen ratio is used to describe the type of heat transfer for a surface that has moisture. Heat transfer can either occur as sensible heat (differences in temperature without evapotranspiration) or latent heat (the energy required during a change of state, without a change in temperature).
This instance has the dimensional units string none.
This instance is a narrower concept derived from distance.
This instance quantifies the process braking.
This instance has the dimensional units string L.
This instance is a narrower concept derived from force.
This instance quantifies the process braking.
This instance has the dimensional units string L M T^2.
This instance is a narrower concept derived from angle.
This instance quantifies the process breakover.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Brinkman number (Br) is a dimensionless number related to heat conduction from a wall to a flowing viscous fluid, commonly used in polymer processing. There are several definitions; one is
B
r
=
μ
u
2
κ
(
T
w
−
T
0
)
=
P
r
E
c
{\displaystyle \mathrm {Br} ={\frac {\mu u^{2}}{\kappa (T_{w}T_{0})}}=\mathrm {Pr} \,\mathrm {Ec} }
where
μ is the dynamic viscosity;
u is the flow velocity;
κ is the thermal conductivity;
T0 is the bulk fluid temperature;
Tw is the wall temperature;
Pr is the Prandtl number
Ec is the Eckert numberIt is the ratio between heat produced by viscous dissipation and heat transported by molecular conduction.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from frequency.
This instance has the dimensional units string T^1.
This instance is a narrower concept derived from emissivity_factor.
This instance has the dimensional units string none.
Alternative labels for this instance are: bubblepoint.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance is a narrower concept derived from pressure_head.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from aerodynamic_conductance.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from heat_transfer_coefficient.
This instance has the dimensional units string M O^1 T^3.
This instance is a narrower concept derived from latent_heat_aerodynamic_conductance.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from heat_transfer_coefficient.
This instance has the dimensional units string M O^1 T^3.
This instance is a narrower concept derived from masspervolume_density.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from mass_aerodynamic_conductance.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from mass_transfer_coefficient.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
The bulk modulus (
K
{\displaystyle K}
or
B
{\displaystyle B}
) of a substance is a measure of how resistant to compression that substance is. It is defined as the ratio of the infinitesimal pressure increase to the resulting relative decrease of the volume.
This instance is a narrower concept derived from modulus.
This instance has the dimensional units string none.
This instance is a narrower concept derived from momentum_aerodynamic_conductance.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from momentum_transfer_coefficient.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from sensible_heat_aerodynamic_conductance.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from heat_transfer_coefficient.
This instance has the dimensional units string M O^1 T^3.
This instance is a narrower concept derived from cellequivalents_concentration.
This instance has the dimensional units string L^3.
This instance quantifies the process calving.
This instance has the dimensional units string L T^1.
Alternative labels for this instance are: castor_angle.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance is a narrower concept derived from force.
This instance has the dimensional units string L M T^2.
This instance has a related Wikipedia page. Short extract:
Capacity or capacities may refer to:
This instance has a related Wikipedia page. Short extract:
The capillary length or capillary constant, is a length scaling factor that relates gravity and surface tension. It is a fundamental physical property that governs the behaviour of menisci, and is found when body forces (gravity) and surface forces (Laplace pressure) are in equilibrium.
This instance is a narrower concept derived from length.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the capillary number (Ca) represents the relative effect of viscous drag forces versus surface tension forces acting across an interface between a liquid and a gas, or between two immiscible liquids. For example, an air bubble in a liquid flow tends to be deformed by the friction of the liquid flow due to viscosity effects, but the surface tension forces tend to minimize the surface.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Carbonate hardness, is a measure of the water hardness caused by the presence of carbonate (CO2−3) and bicarbonate (HCO−3) anions. Carbonate hardness is usually expressed either in degrees KH (dKH) (from the German "Karbonathärte"), or in parts per million calcium carbonate ( ppm CaCO3 or grams CaCO3 per litremg/l).
This instance is a narrower concept derived from hardness.
This instance has the dimensional units string L^3 M.
This instance has a related Wikipedia page. Short extract:
The four cardinal directions, or cardinal points, are the directions north, east, south, and west, commonly denoted by their initials N, E, S, and W. East and west are perpendicular (at right angles) to north and south, with east being in the clockwise direction of rotation from north and west being directly opposite east. Points between the cardinal directions form the points of the compass.
This instance is a narrower concept derived from direction.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The carrying capacity of a biological species in an environment is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water, and other necessities available in the environment.
In population biology, carrying capacity is defined as the environment's maximal load, which is different from the concept of population equilibrium.
This instance is a narrower concept derived from number_capacity.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
Alternative labels for this instance are: cassonmodel_k_parameter.
This instance has the dimensional units string T^2.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In mathematics, Catalan's constant G, which appears in combinatorics, is defined by
G
=
β
(
2
)
=
∑
n
=
0
∞
(
−
1
)
n
(
2
n
+
1
)
2
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1
1
2
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1
3
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⋯
{\displaystyle G=\beta (2)=\sum _{n=0}^{\infty }{\frac {(1)^{n}}{(2n+1)^{2}}}={\frac {1}{1^{2}}}{\frac {1}{3^{2}}}+{\frac {1}{5^{2}}}{\frac {1}{7^{2}}}+{\frac {1}{9^{2}}}\cdots }
where β is the Dirichlet beta function. Its numerical value is approximately (sequence A006752 in the OEIS)
G = 0.915965594177219015054603514932384110774…It is not known whether G is irrational, let alone transcendental.Catalan's constant was named after Eugène Charles Catalan.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Cationexchange capacity (CEC) is a measure of how many cations can be retained on soil particle surfaces. Negative charges on the surfaces of soil particles bind positivelycharged atoms or molecules (cations), but allow these to exchange with other positively charged particles in the surrounding soil water.
This instance is a narrower concept derived from capacity.
This instance has the dimensional units string M^1 N.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string L^3.
Alternative labels for this instance are: chaitin_omega_number, halting_probability.
This instance has a related Wikipedia page. Short extract:
In the computer science subfield of algorithmic information theory, a Chaitin constant (Chaitin omega number) or halting probability is a real number that, informally speaking, represents the probability that a randomly constructed program will halt. These numbers are formed from a construction due to Gregory Chaitin.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass.
This instance has the dimensional units string M.
This instance has a related Wikipedia page. Short extract:
The Chandrasekhar number is a dimensionless quantity used in magnetic convection to represent ratio of the Lorentz force to the viscosity. It is named after the Indian astrophysicist Subrahmanyan Chandrasekhar.
This instance has the dimensional units string none.
This instance has the dimensional units string M.
This instance has the dimensional units string L.
This instance has the dimensional units string L^3.
This instance has the dimensional units string M.
This instance is a narrower concept derived from emission_frequency.
This instance has the following attributes:
This instance quantifies the process emission.
This instance has the dimensional units string T^1.
This instance has a related Wikipedia page. Short extract:
Charge or charged may refer to:
This instance is a narrower concept derived from composition.
This instance has the following attributes:
This instance has a related Wikipedia page. Short extract:
In chemical physics and physical chemistry, chemical affinity is the electronic property by which dissimilar chemical species are capable of forming chemical compounds. Chemical affinity can also refer to the tendency of an atom or compound to combine by chemical reaction with atoms or compounds of unlike composition.
This instance is a narrower concept derived from affinity.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^2 N^1.
This instance has the dimensional units string L^0.5 T^1.
This instance has a related Wikipedia page. Short extract:
Chilton–Colburn Jfactor analogy is a successful and widely used analogy between heat, momentum, and mass transfer. The basic mechanisms and mathematics of heat, mass, and momentum transport are essentially the same.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, circulation is the line integral around a closed curve of the velocity field. Circulation is normally denoted Γ (Greek uppercase gamma).
This instance has the dimensional units string L^2 T^1.
This instance has a related Wikipedia page. Short extract:
In geometry, the circumference (from Latin circumferens, meaning "carrying around") of a circle is the (linear) distance around it. That is, the circumference would be the length of the circle if it were opened up and straightened out to a line segment.
This instance has the dimensional units string L.
This instance is a narrower concept derived from height.
This instance has the dimensional units string L.
This instance is a narrower concept derived from depth.
This instance has the dimensional units string L.
This instance is a narrower concept derived from yield_stress.
This instance has the dimensional units string L^1 M T^2.
Alternative labels for this instance are: cold_content.
This instance is a narrower concept derived from energyperarea_density.
This instance has the dimensional units string M T^2.
This instance has a related Wikipedia page. Short extract:
The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it.
The calorific value is the total energy released as heat when a substance undergoes complete combustion with oxygen under standard conditions.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process combustion.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from length.
This instance has the dimensional units string L.
Alternative labels for this instance are: incompressibility.
This instance has a related Wikipedia page. Short extract:
Incompressibility may refer to:
This instance has the dimensional units string L M^1 T^2.
This instance has a related Wikipedia page. Short extract:
Compressive strength or compression strength is the capacity of a material or structure to withstand loads tending to reduce size, as opposed to tensile strength, which withstands loads tending to elongate. In other words, compressive strength resists compression (being pushed together), whereas tensile strength resists tension (being pulled apart).
This instance is a narrower concept derived from strength.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
The Compton wavelength is a quantum mechanical property of a particle. It was introduced by Arthur Compton in his explanation of the scattering of photons by electrons (a process known as Compton scattering).
This instance is a narrower concept derived from wavelength.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration.
This instance is a narrower concept derived from time.
This instance quantifies the process conching.
This instance has the dimensional units string T.
This instance has a related Wikipedia page. Short extract:
The enthalpy of vaporization, (symbol ∆Hvap) also known as the (latent) heat of vaporization or heat of evaporation, is the amount of energy (enthalpy) that must be added to a liquid substance, to transform a quantity of that substance into a gas. The enthalpy of vaporization is a function of the pressure at which that transformation takes place.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process condensation.
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
Conductance may refer to:
This instance is a narrower concept derived from energy_flux.
This instance quantifies the process conduction.
This instance has the dimensional units string M T^3.
This instance has a related Wikipedia page. Short extract:
Conductivity may refer to:
This instance is a narrower concept derived from latitude.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
A Consumer Price Index measures changes in the price level of market basket of consumer goods and services purchased by households.
The CPI is a statistical estimate constructed using the prices of a sample of representative items whose prices are collected periodically.
This instance has the dimensional units string none.
This instance quantifies the process consumption.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
When two objects touch, only a certain portion of their surface areas will be in contact with each other. This area of true contact, most often constitutes only a very small fraction of the apparent or nominal contact area.
This instance is a narrower concept derived from area.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from area.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from energy_flux.
This instance quantifies the process convection.
This instance has the dimensional units string M T^3.
This instance has the dimensional units string none.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
Convective inhibition (CIN or CINH) is a numerical measure in meteorology that indicates the amount of energy that will prevent an air parcel from rising from the surface to the level of free convection.
CIN is the amount of energy required to overcome the negatively buoyant energy the environment exerts on an air parcel.
This instance is a narrower concept derived from inhibition.
This instance has the dimensional units string L^2 T^2.
Alternative labels for this instance are: conwaysequence_constant.
This instance has a related Wikipedia page. Short extract:
In mathematics, the lookandsay sequence is the sequence of integers beginning as follows:
1, 11, 21, 1211, 111221, 312211, 13112221, 1113213211, ... (sequence A005150 in the OEIS).To generate a member of the sequence from the previous member, read off the digits of the previous member, counting the number of digits in groups of the same digit.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
Alternative labels for this instance are: coriolis_parameter, coriolis_coefficient.
This instance has a related Wikipedia page. Short extract:
The Coriolis frequency ƒ, also called the Coriolis parameter or Coriolis coefficient, is equal to twice the rotation rate Ω of the Earth multiplied by the sine of the latitude φ.
f
=
2
Ω
sin
φ
.
This instance is a narrower concept derived from frequency.
This instance has the dimensional units string T^1.
This instance has a related Wikipedia page. Short extract:
In cosmology, the cosmological constant (usually denoted by the Greek capital letter lambda: Λ) is the energy density of space, or vacuum energy, that arises in Albert Einstein's field equations of general relativity. It is closely associated to the concepts of dark energy and quintessence.Einstein originally introduced the concept in 1917 to counterbalance the effects of gravity and achieve a static universe, a notion which was the accepted view at the time.
This instance has the dimensional units string L^2.
This instance has a related Wikipedia page. Short extract:
In production, research, retail, and accounting, a cost is the value of money that has been used up to produce something or deliver a service, and hence is not available for use anymore. In business, the cost may be one of acquisition, in which case the amount of money expended to acquire it is counted as cost.
This instance has the dimensional units string none.
This instance has the dimensional units string L^2.
This instance has the dimensional units string M^1.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Coulomb constant, the electric force constant, or the electrostatic constant (denoted ke, k or K) is a proportionality constant in electrodynamics equations. In SI units, it is equal to approximately 8987551787.3681764 N·m2·C−2 or 8.99×109 N·m2·C−2.
This instance has the dimensional units string L^3 M T^4 I^2.
This instance has a related Wikipedia page. Short extract:
Count or The Count may refer to:
This instance has the dimensional units string none.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from countperarea_density.
This instance quantifies the process planting.
This instance has the dimensional units string L^2.
This instance has the dimensional units string none.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string M^1.
This instance is a narrower concept derived from radioactivity.
This instance has the dimensional units string M^1 T^1.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^3.
This instance is a narrower concept derived from radioactivity.
This instance has the dimensional units string L^3 T^1.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string L^3.
This instance quantifies the process flowing.
This instance has the dimensional units string T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from salinity.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In mathematics, the Courant–Friedrichs–Lewy (CFL) condition is a necessary condition for convergence while solving certain partial differential equations (usually hyperbolic PDEs) numerically. It arises in the numerical analysis of explicit time integration schemes, when these are used for the numerical solution.
This instance has the dimensional units string none.
This instance is a narrower concept derived from area_fraction.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
Alternative labels for this instance are: crestfactor_ratio.
This instance has a related Wikipedia page. Short extract:
Crest factor is a parameter of a waveform, such as alternating current or sound, showing the ratio of peak values to the effective value. In other words, crest factor indicates how extreme the peaks are in a waveform.
This instance has the dimensional units string none.
Alternative labels for this instance are: cosmological_critical_density.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from slip_distance.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from shear_stress.
This instance has the following attributes:
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from thermal_time.
This instance has the dimensional units string T.
This instance has the dimensional units string T^1.
This instance has a related Wikipedia page. Short extract:
In electromagnetism, current density is the amount of charge per unit time that flows through a unit area of a chosen cross section. The current density vector is defined as a vector whose magnitude is the electric current per crosssectional area at a given point in space, its direction being that of the motion of the charges at this point.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^2 I.
This instance has a related Wikipedia page. Short extract:
In mathematics, curvature is any of a number of loosely related concepts in different areas of geometry. Intuitively, curvature is the amount by which a geometric object such as a surface deviates from being a flat plane, or a curve from being straight as in the case of a line, but this is defined in different ways depending on the context.
This instance has the dimensional units string L^1.
This instance is a narrower concept derived from radius.
This instance has the dimensional units string L.
This instance is a narrower concept derived from depth.
This instance has the dimensional units string L.
This instance is a narrower concept derived from stress.
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from contributing_area.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from slope.
This instance has the dimensional units string none.
This instance is a narrower concept derived from diameter.
This instance has the dimensional units string L.
This instance is a narrower concept derived from diameter.
This instance has the dimensional units string L.
This instance is a narrower concept derived from contributing_area.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from flow_length.
This instance quantifies the process flowing.
This instance has the dimensional units string L.
This instance is a narrower concept derived from flow_width.
This instance quantifies the process flowing.
This instance has the dimensional units string L.
This instance is a narrower concept derived from slope.
This instance has the dimensional units string none.
This instance has the dimensional units string O.
This instance has the dimensional units string O.
This instance is a narrower concept derived from stress_fraction.
This instance has the dimensional units string none.
This instance quantifies the process precipitation.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
The Damköhler numbers (Da) are dimensionless numbers used in chemical engineering to relate the chemical reaction timescale (reaction rate) to the transport phenomena rate occurring in a system. It is named after German chemist Gerhard Damköhler.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Damping is an influence within or upon an oscillatory system that has the effect of reducing, restricting or preventing its oscillations. In physical systems, damping is produced by processes that dissipate the energy stored in the oscillation.
This instance quantifies the process damping.
This instance has the dimensional units string none.
Alternative labels for this instance are: friction_factor, flow_coefficient, resistance_coefficient, darcyweisbach_friction_factor.
This instance is a narrower concept derived from friction_factor.
This instance quantifies the process friction.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics through porous media, the Darcy number (Da) represents the relative effect of the permeability of the medium versus its crosssectional area—commonly the diameter squared. The number is named after Henry Darcy and is found from nondimensionalizing the differential form of Darcy's Law.
This instance has the dimensional units string none.
This instance is a narrower concept derived from velocity.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
The Dean number (De) is a dimensionless group in fluid mechanics, which occurs in the study of flow in curved pipes and channels. It is named after the British scientist W. R. Dean, who was the first to provide a theoretical solution of the fluid
motion through curved pipes for laminar flow by using a perturbation procedure from a Poiseuille flow in a straight pipe to a flow in a pipe with very small curvature.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Deborah number (De) is a dimensionless number, often used in rheology to characterize the fluidity of materials under specific flow conditions. It quantifies the observation that given enough time even a solidlike material might flow, or a fluidlike material can act solid when it is deformed rapidly enough.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass.
This instance quantifies the process decomposition.
This instance has the dimensional units string M.
This instance is a narrower concept derived from massperarea_mineralization_density.
This instance quantifies the process mineralization. This instance quantifies the process decomposition.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process decomposition.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from mass.
This instance quantifies the process respiration. This instance quantifies the process decomposition.
This instance has the dimensional units string M.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process respiration. This instance quantifies the process decomposition.
This instance has the dimensional units string L^2 M T^1.
This instance has the dimensional units string none.
Alternative labels for this instance are: threshold.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance has the dimensional units string T^1.
This instance is a narrower concept derived from mass_ratio.
This instance quantifies the process demand.
This instance has the dimensional units string none.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process denaturation.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from massperarea_emission_density.
This instance quantifies the process emission. This instance quantifies the process denitrification.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from mass_emission_rate.
This instance quantifies the process emission. This instance quantifies the process denitrification.
This instance has the dimensional units string M T^1.
This instance has a related Wikipedia page. Short extract:
The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The symbol most often used for density is ρ (the lower case Greek letter rho), although the Latin letter D can also be used.
This instance has a related Wikipedia page. Short extract:
Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity usually means relative density with respect to water.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance quantifies the process departure.
This instance has the dimensional units string none.
This instance is a narrower concept derived from age.
This instance quantifies the process deposition.
This instance has the dimensional units string T.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
Depth(s) may refer to:
This instance has the dimensional units string L.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process desublimation.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process desublimation.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from count.
This instance quantifies the process detection.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In statistics, the coefficient of determination, denoted R2 or r2 and pronounced "R squared", is the proportion of the variance in the dependent variable that is predictable from the independent variable(s).
It is a statistic used in the context of statistical models whose main purpose is either the prediction of future outcomes or the testing of hypotheses, on the basis of other related information.
This instance has the dimensional units string none.
This instance is a narrower concept derived from strain.
This instance has the dimensional units string none.
This instance is a narrower concept derived from strain_rate.
This instance has the dimensional units string T^1.
This instance is a narrower concept derived from stress.
This instance has the dimensional units string L^1 M T^2.
Alternative labels for this instance are: dewpoint.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle.
This instance has the dimensional units string L.
This instance is a narrower concept derived from shape_factor.
This instance has the dimensional units string none.
This instance has the dimensional units string O.
This instance is a narrower concept derived from energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from energy_flux.
This instance quantifies the process diffusion.
This instance has the dimensional units string M T^3.
This instance has the dimensional units string none.
Alternative labels for this instance are: diffusion_coefficient.
This instance has a related Wikipedia page. Short extract:
Diffusivity is a rate of diffusion, a measure of the rate at which particles or heat or fluids can spread.
It is measured differently for different mediums.
This instance has the dimensional units string L^2 T^1.
This instance is a narrower concept derived from angle.
This instance quantifies the process dilation.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance is a narrower concept derived from energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
This instance has a related Wikipedia page. Short extract:
In a nozzle or other constriction, the discharge coefficient (also known as coefficient of discharge) is the ratio of the actual discharge to the theoretical discharge, i.e., the ratio of the mass flow rate at the discharge end of the nozzle to that of an ideal nozzle which expands an identical working fluid from the same initial conditions to the same exit pressures.
Mathematically the discharge coefficient may be related to the mass flow rate of a fluid through a straight tube of constant crosssectional area through the following
C
d
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m
˙
ρ
V
˙
=
m
˙
ρ
A
u
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ρ
A
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Δ
P
ρ
=
m
˙
A
2
ρ
Δ
P
{\displaystyle C_{\text{d}}={\frac {\dot {m}}{\rho {\dot {V}}}}={\frac {\dot {m}}{\rho Au}}={\frac {\dot {m}}{\rho A{\sqrt {\frac {2\Delta P}{\rho }}}}}={\frac {\dot {m}}{A{\sqrt {2\rho \Delta P}}}}}
C
d
=
Q
exp
Q
theo
{\displaystyle C_{\text{d}}={\frac {Q_{\text{exp}}}{Q_{\text{theo}}}}}
Where:
C
d
{\displaystyle C_{\text{d}}}
, discharge coefficient through the constriction (dimensionless).
This instance has the dimensional units string none.
This instance is a narrower concept derived from countpermass_radioactivity.
This instance quantifies the process disintegration.
This instance has the dimensional units string M^1 T^1.
This instance is a narrower concept derived from countpervolume_radioactivity.
This instance quantifies the process disintegration.
This instance has the dimensional units string L^3 T^1.
Alternative labels for this instance are: position_displacement.
This instance has a related Wikipedia page. Short extract:
A displacement is a vector whose length is the shortest distance from the initial to the final position of a point P. It quantifies both the distance and direction of an imaginary motion along a straight line from the initial position to the final position of the point. A displacement may be identified with the translation that maps the initial position to the final position.
This instance has the dimensional units string L.
This instance is a narrower concept derived from length.
This instance has the dimensional units string L.
This instance is a narrower concept derived from energy.
This instance quantifies the process dissociation.
This instance has the dimensional units string L^2 M T^2.
Alternative labels for this instance are: solution_enthalpy.
This instance has a related Wikipedia page. Short extract:
The enthalpy of solution, enthalpy of dissolution, or heat of solution is the enthalpy change associated with the dissolution of a substance in a solvent at constant pressure resulting in infinite dilution.
The enthalpy of solution is most often expressed in kJ/mol at constant temperature.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process dissolution.
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
Distance is a numerical measurement of how far apart objects are. In physics or everyday usage, distance may refer to a physical length or an estimation based on other criteria (e.g.
This instance has the dimensional units string L.
This instance has the dimensional units string O.
This instance has the dimensional units string O.
This instance has the dimensional units string O.
Alternative labels for this instance are: diurnal.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance is a narrower concept derived from duration.
This instance quantifies the process diving.
This instance has the dimensional units string T.
This instance has a related Wikipedia page. Short extract:
A diversity index is a quantitative measure that reflects how many different types (such as species) there are in a dataset (a community), and simultaneously takes into account how evenly the basic entities (such as individuals) are distributed among those types.
When diversity indices are used in ecology, the types of interest are usually species, but they can also be other categories, such as genera, families, functional types or haplotypes.
This instance is a narrower concept derived from diversity.
This instance has the dimensional units string none.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L^0.33 T.
This instance has the dimensional units string L.
This instance has the dimensional units string L^1 M T^1.
This instance quantifies the process flowing.
This instance has the dimensional units string L^3 T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L^0.33 T.
This instance has the dimensional units string L.
This instance has the dimensional units string L^1 M T^1.
This instance quantifies the process flowing.
This instance has the dimensional units string L^3 T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance quantifies the process desublimation.
This instance has the dimensional units string L.
This instance quantifies the process evaporation.
This instance has the dimensional units string L.
This instance quantifies the process infiltration.
This instance has the dimensional units string L.
This instance quantifies the process melting.
This instance has the dimensional units string L.
This instance quantifies the process precipitation.
This instance has the dimensional units string L.
This instance quantifies the process precipitation.
This instance has the dimensional units string L.
This instance quantifies the process recharge.
This instance has the dimensional units string L.
This instance quantifies the process runoff.
This instance has the dimensional units string L.
This instance quantifies the process sublimation.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance quantifies the process precipitation.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L.
This instance has the dimensional units string L^2 T I.
This instance has the dimensional units string L M T^3 I^1.
This instance has the dimensional units string L^2 T I.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string M T^2 I^1.
This instance has the dimensional units string L^1 I.
This instance has the dimensional units string L^1 I.
This instance has the dimensional units string T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 O.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 O.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from hydraulic_geometry_depthvsdischarge_coefficient.
This instance has the dimensional units string none.
This instance is a narrower concept derived from hydraulic_geometry_depthvsdischarge_exponent.
This instance has the dimensional units string none.
This instance is a narrower concept derived from hydraulic_geometry_slopevsdischarge_coefficient.
This instance has the dimensional units string none.
This instance is a narrower concept derived from hydraulic_geometry_slopevsdischarge_exponent.
This instance has the dimensional units string none.
This instance is a narrower concept derived from hydraulic_geometry_speedvsdischarge_coefficient.
This instance has the dimensional units string none.
This instance is a narrower concept derived from hydraulic_geometry_speedvsdischarge_exponent.
This instance has the dimensional units string none.
This instance is a narrower concept derived from hydraulic_geometry_widthvsdischarge_coefficient.
This instance has the dimensional units string none.
This instance is a narrower concept derived from hydraulic_geometry_widthvsdischarge_exponent.
This instance has the dimensional units string none.
This instance is a narrower concept derived from sinuosity.
This instance has the dimensional units string none.
This instance is a narrower concept derived from heat_energy_flux.
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from depth.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the drag coefficient (commonly denoted as:
C
d
{\displaystyle \scriptstyle C_{\mathrm {d} }\,}
,
C
x
{\displaystyle \scriptstyle C_{\mathrm {x} }\,}
or
C
w
{\displaystyle \scriptstyle C_{\mathrm {w} }\,}
) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment, such as air or water. It is used in the drag equation in which a lower drag coefficient indicates the object will have less aerodynamic or hydrodynamic drag.
This instance quantifies the process dragging.
This instance has the dimensional units string none.
This instance is a narrower concept derived from force.
This instance quantifies the process dragging.
This instance has the dimensional units string L M T^2.
This instance has a related Wikipedia page. Short extract:
Drainage density is the total length of all the streams and rivers in a drainage basin divided by the total area of the drainage basin. It is a measure of how well or how poorly a watershed is drained by stream channels.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^1.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process leaching. This instance quantifies the process draining.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from speed.
This instance quantifies the process drifting.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from velocity.
This instance quantifies the process drifting.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
Alternative labels for this instance are: dry, adiabatic.
This instance is a narrower concept derived from temperature_lapse_rate.
This instance has the dimensional units string L^1 O.
This instance is a narrower concept derived from mass_fraction.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance is a narrower concept derived from energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
The Dukhin number (Du) is a dimensionless quantity that characterizes the contribution of the surface conductivity to various electrokinetic and electroacoustic effects, as well as to electrical conductivity and permittivity of fluid heterogeneous systems.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Duration may refer to:
This instance has the dimensional units string T.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from pressure.
This instance has the following attributes:
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from stress.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^1.
This instance has a related Wikipedia page. Short extract:
The number e is a mathematical constant that is the base of the natural logarithm: the unique number whose natural logarithm is equal to one. It is approximately equal to 2.71828, and is the limit of (1 + 1/n)n as n approaches infinity, an expression that arises in the study of compound interest.
This instance has the dimensional units string none.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^2 T I.
This instance has the dimensional units string L M T^3 I^1.
This instance has the dimensional units string L^2 T I.
This instance has the dimensional units string L M T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string M T^2 I^1.
This instance has the dimensional units string L^1 I.
This instance has the dimensional units string L^1 I.
This instance has the dimensional units string none.
This instance has the dimensional units string T^2.
This instance has the dimensional units string L^2 T^1.
This instance has the dimensional units string L^1.
This instance has the dimensional units string none.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^1 T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string none.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 O.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
In mathematics, the eccentricity of a conic section is a nonnegative real number that uniquely characterizes its shape.
More formally two conic sections are similar if and only if they have the same eccentricity.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Eckert number (Ec) is a dimensionless number used in continuum mechanics. It expresses the relationship between a flow's kinetic energy and the boundary layer enthalpy difference, and is used to characterize heat dissipation.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In economics, elasticity is the measurement of the proportional change of an economic variable in response to a change in another. It shows how easy it is for the supplier and
consumer to change their behavior and substitute another good, the strength of an incentive over choices per the relative opportunity cost.
This instance is a narrower concept derived from elasticity.
This instance has the dimensional units string none.
Alternative labels for this instance are: effective.
This instance is a narrower concept derived from hydraulic_conductivity.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
Alternative labels for this instance are: effective, saturated.
This instance is a narrower concept derived from hydraulic_conductivity.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
Efficiency is the (often measurable) ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result. In a more general sense, it is the ability to do things well, successfully, and without waste.
This instance has a related Wikipedia page. Short extract:
The Ekman number (Ek) is a dimensionless number used in fluid dynamics to describe the ratio of viscous forces to Coriolis forces. It is frequently used in describing geophysical phenomena in the oceans and atmosphere in order to characterise the ratio of viscous forces to the Coriolis forces arising from planetary rotation.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. There are twotypes of electric charges; positive and negative (commonly carried by protons and electrons respectively).
This instance has the dimensional units string T I.
This instance has the dimensional units string M^1 T I.
Alternative labels for this instance are: electric_displacement, electric_displacement_field.
This instance has a related Wikipedia page. Short extract:
In physics, the electric displacement field, denoted by D, is a vector field that appears in Maxwell's equations. It accounts for the effects of free and bound charge within materials.
This instance has the dimensional units string L^2 T I.
Alternative labels for this instance are: electric_field.
This instance has a related Wikipedia page. Short extract:
An electric field surrounds an electric charge, and exerts force on other charges in the field, attracting or repelling them. Electric field is sometimes abbreviated as Efield.
This instance has the dimensional units string L M T^3 I^1.
Alternative labels for this instance are: electric_polarization, polarization.
This instance has a related Wikipedia page. Short extract:
In classical electromagnetism, polarization density (or electric polarization, or simply polarization) is the vector field that expresses the density of permanent or induced electric dipole moments in a dielectric material. When a dielectric is placed in an external electric field, its molecules gain electric dipole moment and the dielectric is said to be polarized.
This instance has the dimensional units string L^2 T I.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^2 T I.
This instance has a related Wikipedia page. Short extract:
Electrical energy is energy derived from electric potential energy or kinetic energy. When used loosely, "electrical energy" refers to energy that has been converted from electric potential energy.
This instance is a narrower concept derived from energy.
This instance has the dimensional units string L^2 M T^2.
Alternative labels for this instance are: electricfieldpotential.
This instance has a related Wikipedia page. Short extract:
An electric potential (also called the electric field potential, potential drop or the electrostatic potential) is the amount of work needed to move a unit of positive charge from a reference point to a specific point inside the field without producing an acceleration. Typically, the reference point is the Earth or a point at infinity, although any point beyond the influence of the electric field charge can be used.
This instance is a narrower concept derived from potential.
This instance has the dimensional units string L^2 M T^3 I^1.
This instance has a related Wikipedia page. Short extract:
In electricity (electromagnetism), the electric susceptibility (
χ
e
{\displaystyle \chi _{\text{e}}}
; Latin: susceptibilis "receptive") is a dimensionless proportionality constant that indicates the degree of polarization of a dielectric material in response to an applied electric field. The greater the electric susceptibility, the greater the ability of a material to polarize in response to the field, and thereby reduce the total electric field inside the material (and store energy).
This instance is a narrower concept derived from susceptibility.
This instance has the dimensional units string none.
This instance is a narrower concept derived from conductance.
This instance has the dimensional units string L^2 M^1 T^3 I^2.
This instance has a related Wikipedia page. Short extract:
Electrical resistivity (also called specific electrical resistance or volume resistivity) and its converse, electrical conductivity, is a fundamental property of a material that quantifies how strongly it resists or conducts the flow of electric current. A low resistivity indicates a material that readily allows the flow of electric current.
This instance is a narrower concept derived from conductivity.
This instance has the dimensional units string L^3 M^1 T^3 I^2.
This instance has a related Wikipedia page. Short extract:
The efficiency of an entity (a device, component, or system) in electronics and electrical engineering is defined as useful power output divided by the total electrical power consumed (a fractional expression), typically denoted by the Greek small letter eta (η – ήτα).
E
f
f
i
c
i
e
n
c
y
=
U
s
e
f
u
l
p
o
w
e
r
o
u
t
p
u
t
T
o
t
a
l
p
o
w
e
r
i
n
p
u
t
{\displaystyle \mathrm {Efficiency} ={\frac {\mathrm {Useful\ power\ output} }{\mathrm {Total\ power\ input} }}}
If energy output and input are expressed in the same units, efficiency is a dimensionless number.
This instance is a narrower concept derived from efficiency.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied. The term complex impedance may be used interchangeably.
This instance is a narrower concept derived from impedance.
This instance has the dimensional units string L^2 M T^3 I^2.
This instance has a related Wikipedia page. Short extract:
The impedance of free space, Z0, is a physical constant relating the magnitudes of the electric and magnetic fields of electromagnetic radiation travelling through free space. That is, Z0 = E/H, where E is the electric field strength and H is the magnetic field strength.
This instance has the dimensional units string L^2 M T^3 I^2.
Alternative labels for this instance are: inverse_of_electrical_conductivity.
This instance has a related Wikipedia page. Short extract:
Electrical resistivity (also called specific electrical resistance or volume resistivity) and its converse, electrical conductivity, is a fundamental property of a material that quantifies how strongly it resists or conducts the flow of electric current. A low resistivity indicates a material that readily allows the flow of electric current.
This instance is a narrower concept derived from resistivity.
This instance has the dimensional units string L^3 M T^3 I^2.
This instance has a related Wikipedia page. Short extract:
In chemistry and atomic physics, the electron affinity (Eea) of an atom or molecule is defined as the amount of energy released or spent when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.
X + e− → X− + energyIn solid state physics, the electron affinity for a surface is defined somewhat differently (see below).
This instance is a narrower concept derived from affinity.
This instance has the dimensional units string L^2 M T^2 N^1.
This instance has a related Wikipedia page. Short extract:
The elementary charge, usually denoted by e or sometimes qe, is the electric charge carried by a single proton or, equivalently, the magnitude of the electric charge carried by a single electron, which has charge −1 e. This elementary charge is a fundamental physical constant.
This instance has the dimensional units string T I.
Alternative labels for this instance are: geometric_height.
This instance has a related Wikipedia page. Short extract:
The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § Vertical datum).
The term elevation is mainly used when referring to points on the Earth's surface, while altitude or geopotential height is used for points above the surface, such as an aircraft in flight or a spacecraft in orbit, and depth is used for points below the surface.
This instance has the dimensional units string L.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance quantifies the process impaction.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance quantifies the process drifting.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance quantifies the process lowering.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from frequency.
This instance quantifies the process emission.
This instance has the dimensional units string T^1.
This instance quantifies the process emission.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The emissivity of the surface of a material is its effectiveness in emitting energy as thermal radiation. Thermal radiation is electromagnetic radiation and it may include both visible radiation (light) and infrared radiation, which is not visible to human eyes.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Emittance may refer to:
This instance is a narrower concept derived from energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from time.
This instance has the dimensional units string T.
This instance has a related Wikipedia page. Short extract:
In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.
This instance has the dimensional units string L^2 M T^2.
Alternative labels for this instance are: energyperarea_content.
This instance is a narrower concept derived from density.
This instance has the dimensional units string M T^2.
This instance quantifies the process flowing.
This instance has the dimensional units string L^1 M^2 T^3.
This instance quantifies the process flowing.
This instance has the dimensional units string M^2 T^3.
Alternative labels for this instance are: specific_energy.
This instance has a related Wikipedia page. Short extract:
Energy density has tables of specific energies of devices and materials.Specific energy is energy per unit mass. (It is also sometimes called "energy density," though "energy density" more precisely means energy per unit volume.) It is used to quantify, for example, stored heat and other thermodynamic properties of substances such as specific internal energy, specific enthalpy, specific Gibbs free energy, and specific Helmholtz free energy.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^2 T^2.
Alternative labels for this instance are: energy_density, energy_content.
This instance has a related Wikipedia page. Short extract:
Energy density is the amount of energy stored in a given system or region of space per unit volume. Colloquially it may also be used for energy per unit mass, though the accurate term for this is specific energy.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^1 M T^2.
This instance quantifies the process dissipation.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L M T^3.
This instance is a narrower concept derived from diffusivity.
This instance has the dimensional units string L^2 T^1.
This instance quantifies the process flowing.
This instance has the dimensional units string L M^2 T^3.
This instance has a related Wikipedia page. Short extract:
Energy flux is the rate of transfer of energy through a surface. The quantity is defined in two different ways, depending on the context:
Rate of energy transfer per unit area.
This instance has the dimensional units string M T^3.
This instance has the dimensional units string none.
Alternative labels for this instance are: radiant_exposure.
This instance has a related Wikipedia page. Short extract:
In radiometry, radiant exposure or fluence is the radiant energy received by a surface per unit area, or equivalently the irradiance of a surface, integrated over time of irradiation, and spectral exposure or is the radiant exposure per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. The SI unit of radiant exposure is the joule per square metre (J/m2), while that of spectral exposure in frequency is the joule per square metre per hertz (J⋅m−2⋅Hz−1) and that of spectral exposure in wavelength is the joule per square metre per metre (J/m3)—commonly the joule per square metre per nanometre (J⋅m−2⋅nm−1).
This instance is a narrower concept derived from intensity.
This instance has the dimensional units string M T^2.
Alternative labels for this instance are: thermodynamic_potential.
This instance has a related Wikipedia page. Short extract:
Enthalpy (listen), a property of a thermodynamic system, is equal to the system's internal energy plus the product of its pressure and volume. In a system enclosed so as to prevent matter transfer, for processes at constant pressure, the heat absorbed or released equals the change in enthalpy.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string L^1 M T^2.
Alternative labels for this instance are: environmental, static.
This instance is a narrower concept derived from pressure_lapse_rate.
This instance has the dimensional units string L^2 M T^2.
Alternative labels for this instance are: environmental.
This instance is a narrower concept derived from temperature_lapse_rate.
This instance has the dimensional units string L^1 O.
This instance is a narrower concept derived from radius.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from partial_pressure.
This instance has the following attributes:
This instance has the dimensional units string L^1 M T^2.
Alternative labels for this instance are: equivalence_mass_ratio.
This instance has the dimensional units string none.
Alternative labels for this instance are: equivalent, potential.
This instance is a narrower concept derived from potential_temperature.
This instance has the dimensional units string O.
This instance has the dimensional units string none.
Alternative labels for this instance are: equivalent.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
In the study of liquid crystals, the Ericksen number (Er) is a dimensionless number used to describe the deformation of the director field under flow. It is defined as the ratio of the viscous to elastic forces.
This instance has the dimensional units string none.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics the Eötvös number (Eo), also called the Bond number (Bo), is a dimensionless number
measuring the importance of gravitational forces compared to surface tension forces and is used (together with Morton number) to characterize the shape of bubbles or drops moving in a surrounding fluid. The two names commemorate the Hungarian physicist Loránd Eötvös (1848–1919)
and the English physicist Wilfrid Noel Bond (1897–1937),
respectively.
This instance has the dimensional units string none.
Alternative labels for this instance are: eulermascheroni_constant, euler_constant.
This instance has a related Wikipedia page. Short extract:
The Euler–Mascheroni constant (also called Euler's constant) is a mathematical constant recurring in analysis and number theory, usually denoted by the lowercase Greek letter gamma (γ).
It is defined as the limiting difference between the harmonic series and the natural logarithm:
γ
=
lim
n
→
∞
(
−
ln
n
+
∑
k
=
1
n
1
k
)
=
∫
1
∞
(
−
1
x
+
1
⌊
x
⌋
)
d
x
.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Euler number (Eu) is a dimensionless number used in fluid flow calculations. It expresses the relationship between a local pressure drop caused by a restriction and the kinetic energy per volume of the flow, and is used to characterize energy losses in the flow, where a perfect frictionless flow corresponds to an Euler number of 1.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The number e is a mathematical constant that is the base of the natural logarithm: the unique number whose natural logarithm is equal to one. It is approximately equal to 2.71828, and is the limit of (1 + 1/n)n as n approaches infinity, an expression that arises in the study of compound interest.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process evaporation.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process evaporation.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process evapotranspiration.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process evapotranspiration.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Exner function is an important parameter in atmospheric modeling. The Exner function can be viewed as nondimensionalized pressure and can be defined as:
Π
=
(
p
p
0
)
R
d
/
c
p
=
T
θ
{\displaystyle \Pi =\left({\frac {p}{p_{0}}}\right)^{R_{d}/c_{p}}={\frac {T}{\theta }}}
where
p
0
{\displaystyle p_{0}}
is a standard reference surface pressure, usually taken as 1000 hPa;
R
d
{\displaystyle R_{d}}
is the gas constant for dry air;
c
p
{\displaystyle c_{p}}
is the heat capacity of dry air at constant pressure;
T
{\displaystyle T}
is the absolute temperature; and
θ
{\displaystyle \theta }
is the potential temperature.
This instance has the dimensional units string none.
This instance quantifies the process expansion.
This instance has the dimensional units string none.
This instance is a narrower concept derived from period.
This instance is a narrower concept derived from dynamic_viscosity.
This instance has the dimensional units string L^1 M T^1.
This instance is a narrower concept derived from kinematic_viscosity.
This instance has the dimensional units string L^2 T^1.
This instance has a related Wikipedia page. Short extract:
Extent may refer to:
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from speed.
This instance quantifies the process falling.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
The Fanning friction factor, named after John Thomas Fanning, is a dimensionless number used as a local parameter in continuum mechanics calculations. It is defined as the ratio between the local shear stress and the local flow kinetic energy density:
f
=
τ
ρ
u
2
2
{\displaystyle f={\frac {\tau }{\rho {\frac {u^{2}}{2}}}}}
where:
f
{\displaystyle f}
is the local Fanning friction factor (dimensionless)
τ
{\displaystyle \tau }
is the local shear stress (unit in
l
b
m
f
t
⋅
s
2
{\displaystyle {\frac {lb_{m}}{ft\cdot s^{2}}}}
or
k
g
m
⋅
s
2
{\displaystyle {\frac {kg}{m\cdot s^{2}}}}
or Pa)
u
{\displaystyle u}
is the bulk flow velocity (unit in
f
t
s
{\displaystyle {\frac {ft}{s}}}
or
m
s
{\displaystyle {\frac {m}{s}}}
)
ρ
{\displaystyle \rho }
is the density of the fluid (unit in
l
b
m
f
t
3
{\displaystyle {\frac {lb_{m}}{ft^{3}}}}
or
k
g
m
3
{\displaystyle {\frac {kg}{m^{3}}}}
)In particular the shear stress at the wall can, in turn, be related to the pressure loss by multiplying the wall shear stress by the wall area (
2
π
R
L
{\displaystyle 2\pi RL}
for a pipe with circular cross section) and dividing by the crosssectional flow area (
π
R
2
{\displaystyle \pi R^{2}}
for a pipe with circular cross section).
This instance is a narrower concept derived from friction_factor.
This instance quantifies the process friction.
This instance has the dimensional units string none.
Alternative labels for this instance are: Feigenbaum_second_constant.
This instance has a related Wikipedia page. Short extract:
In mathematics, specifically bifurcation theory, the Feigenbaum constants are two mathematical constants which both express ratios in a bifurcation diagram for a nonlinear map. They are named after the mathematician Mitchell Feigenbaum.
This instance has the dimensional units string none.
Alternative labels for this instance are: Feigenbaum_first_constant.
This instance has a related Wikipedia page. Short extract:
In mathematics, specifically bifurcation theory, the Feigenbaum constants are two mathematical constants which both express ratios in a bifurcation diagram for a nonlinear map. They are named after the mathematician Mitchell Feigenbaum.
This instance has the dimensional units string none.
This instance is a narrower concept derived from date.
This instance is a narrower concept derived from pressure_head.
This instance has the dimensional units string L.
This instance is a narrower concept derived from volume_fraction.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass.
This instance has the dimensional units string M.
Alternative labels for this instance are: sommerfeld_constant.
This instance has a related Wikipedia page. Short extract:
In physics, the finestructure constant, also known as Sommerfeld's constant, commonly denoted by α (the Greek letter alpha), is a dimensionless physical constant characterizing the strength of the electromagnetic interaction between elementary charged particles. It is related to the elementary charge e, which characterizes the strength of the coupling of an elementary charged particle with the electromagnetic field, by the formula 4πε0ħcα = e2.
This instance has the dimensional units string none.
This instance is a narrower concept derived from speed.
This instance quantifies the process firing.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from time.
This instance quantifies the process firing.
This instance has the dimensional units string T.
This instance has the dimensional units string L^4 M T^3.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from flight_duration.
This instance quantifies the process flight.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from length.
This instance quantifies the process flowing.
This instance has the dimensional units string L.
This instance is a narrower concept derived from speed.
This instance quantifies the process flowing.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from width.
This instance quantifies the process flowing.
This instance has the dimensional units string L.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Föppl–von Kármán equations, named after August Föppl and Theodore von Kármán, are a set of nonlinear partial differential equations describing the large deflections of thin flat plates. With applications ranging from the design of submarine hulls to the mechanical properties of cell wall, the equations are notoriously difficult to solve, and take the following form:
(
1
)
E
h
3
12
(
1
−
ν
2
)
∇
4
w
−
h
∂
∂
x
β
(
σ
α
β
∂
w
∂
x
α
)
=
P
(
2
)
∂
σ
α
β
∂
x
β
=
0
{\displaystyle {\begin{aligned}(1)\qquad &{\frac {Eh^{3}}{12(1\nu ^{2})}}\nabla ^{4}wh{\frac {\partial }{\partial x_{\beta }}}\left(\sigma _{\alpha \beta }{\frac {\partial w}{\partial x_{\alpha }}}\right)=P\\(2)\qquad &{\frac {\partial \sigma _{\alpha \beta }}{\partial x_{\beta }}}=0\end{aligned}}}
where E is the Young's modulus of the plate material (assumed homogeneous and isotropic), υ is the Poisson's ratio, h is the thickness of the plate, w is the out–of–plane deflection of the plate, P is the external normal force per unit area of the plate, σαβ is the Cauchy stress tensor, and α, β are indices that take values of 1 and 2 (the two orthogonal inplane directions).
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate.
This instance has the dimensional units string L M T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
The standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy during the formation of 1 mole of the substance from its constituent elements, with all substances in their standard states. The standard pressure value p⦵ = 105 Pa (= 100 kPa = 1 bar) is recommended by IUPAC, although prior to 1982 the value 1.00 atm (101.325 kPa) was used.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process formation.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from turbidity.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In physics and engineering, the Fourier number (Fo) or Fourier modulus, named after Joseph Fourier, is a dimensionless number that characterizes transient heat conduction. Conceptually, it is the ratio of diffusive or conductive transport rate to the quantity storage rate, where the quantity may be either heat (thermal energy) or matter (particles).
This instance has the dimensional units string none.
This instance is a narrower concept derived from height.
This instance has the dimensional units string L.
Alternative labels for this instance are: frost_line, frost_depth.
This instance has a related Wikipedia page. Short extract:
The frost line—also known as frost depth or freezing depth—is most commonly the depth to which the groundwater in soil is expected to freeze. The frost depth depends on the climatic conditions of an area, the heat transfer properties of the soil and adjacent materials, and on nearby heat sources.
This instance is a narrower concept derived from depth.
This instance quantifies the process freezing.
This instance has the dimensional units string L.
Alternative labels for this instance are: freezingpoint.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
The Fresnel number (F), named after the physicist AugustinJean Fresnel, is a dimensionless number occurring in optics, in particular in scalar diffraction theory.
For an electromagnetic wave passing through an aperture and hitting a screen, the Fresnel number F is defined as
F
=
a
2
L
λ
{\displaystyle F={\frac {a^{2}}{L\lambda }}}
where
a
{\displaystyle a}
is the characteristic size (e.g.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance quantifies the process friction.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction:
Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.
This instance quantifies the process friction.
This instance has the dimensional units string none.
This instance quantifies the process friction.
This instance has the dimensional units string none.
This instance is a narrower concept derived from head.
This instance has the dimensional units string L.
This instance is a narrower concept derived from conduction_heat_energy_flux.
This instance has the following attributes:
This instance quantifies the process conduction.
This instance has the dimensional units string M T^3.
Alternative labels for this instance are: frostpoint.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
In continuum mechanics, the Froude number (Fr) is a dimensionless number defined as the ratio of the flow inertia to the external field (the latter in many applications simply due to gravity). Named after William Froude (;), the Froude number is based on the speed–length ratio which he defined as:
F
r
=
u
0
g
0
l
0
{\displaystyle \mathrm {Fr} ={\frac {u_{0}}{\sqrt {g_{0}l_{0}}}}}
where u0 is a characteristic flow velocity, g0 is in general a characteristic external field, and l0 is a characteristic length.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In chemical thermodynamics, the fugacity of a real gas is an effective partial pressure which replaces the mechanical partial pressure in an accurate computation of the chemical equilibrium constant. It is equal to the pressure of an ideal gas which has the same temperature and molar Gibbs free energy as the real gas.Fugacities are determined experimentally or estimated from various models such as a Van der Waals gas that are closer to reality than an ideal gas.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
The enthalpy of fusion of a substance, also known as (latent) heat of fusion, is the change in its enthalpy resulting from providing energy, typically heat, to a specific quantity of the substance to change its state from a solid to a liquid, at constant pressure. For example, when melting 1 kg of ice (at 0 °C under a wide range of pressures), 333.55 kJ of energy is absorbed with no temperature change.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process fusion.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from s_coordinate.
This instance has the dimensional units string none.
This instance is a narrower concept derived from s_coordinate.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Bicycle gearing is the aspect of a bicycle drivetrain that determines the relation between the cadence, the rate at which the rider pedals, and the rate at which the drive wheel turns.
On some bicycles there is only one gear and, therefore, the gear ratio is fixed, but most modern bicycles have multiple gears and thus multiple gear ratios.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the Galilei number (Ga), sometimes also referred to as Galileo number (see discussion), is a dimensionless number named after Italian scientist Galileo Galilei (15641642).
It may be regarded as proportional to gravity forces divided by viscous forces.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from curvature.
This instance has the dimensional units string L^1.
This instance is a narrower concept derived from latitude.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance is a narrower concept derived from latitude.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance quantifies the process precipitation.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from albedo.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance is a narrower concept derived from height.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from conduction_heat_energy_flux.
This instance has the following attributes:
This instance quantifies the process conduction.
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from energy.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance quantifies the process precipitation.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
In mathematics, two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities. The figure on the right illustrates the geometric relationship.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
A googol is the large number 10100. In decimal notation, it is written as the digit 1 followed by one hundred zeroes:
10,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, Görtler vortices are secondary flows that appear in a boundary layer flow along a concave wall. If the boundary layer is thin compared to the radius of curvature of the wall, the pressure remains constant across the boundary layer.
This instance has the dimensional units string none.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the Graetz number (Gz) is a dimensionless number that characterizes laminar flow in a conduit. The number is defined as:
G
z
=
D
H
L
R
e
P
r
{\displaystyle \mathrm {Gz} ={D_{H} \over L}\mathrm {Re} \,\mathrm {Pr} }
where
DH is the diameter in round tubes or hydraulic diameter in arbitrary crosssection ducts
L is the length
Re is the Reynolds number and
Pr is the Prandtl number.This number is useful in determining the thermally developing flow entrance length in ducts.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Grashof number (Gr) is a dimensionless number in fluid dynamics and heat transfer which approximates the ratio of the buoyancy to viscous force acting on a fluid. It frequently arises in the study of situations involving natural convection and is analogous to the Reynolds number.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In physics, a gravitational coupling constant is a constant characterizing the gravitational attraction between a given pair of elementary particles. The electron mass is typically used, and the associated constant typically denoted αG. It is a dimensionless quantity, with the result that its numerical value does not vary with the choice of units of measurement, only with the choice of particle.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In physics, gravitational acceleration is the acceleration on an object caused by the force of gravitation. Neglecting friction such as air resistance, all small bodies accelerate in a gravitational field at the same rate relative to the center of mass.
This instance is a narrower concept derived from acceleration.
This instance has the following attributes:
This instance has the dimensional units string L T^2.
This instance is a narrower concept derived from capillary_length.
This instance has the dimensional units string L.
This instance is a narrower concept derived from activitypermass_radioactivity.
This instance has the dimensional units string M^1 T^1.
This instance is a narrower concept derived from activitypervolume_radioactivity.
This instance has the dimensional units string L^3 T^1.
This instance is a narrower concept derived from decomposition_massperarea_mineralization_density.
This instance quantifies the process mineralization. This instance quantifies the process decomposition.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from massperarea_immobilization_density.
This instance quantifies the process immobilization.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from masspermass_radioactivity.
This instance has the dimensional units string T^1.
This instance quantifies the process immobilization.
This instance is a narrower concept derived from mass_mineralization_rate.
This instance quantifies the process mineralization.
This instance has the dimensional units string M T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from velocity.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Love numbers h, k, and l are dimensionless parameters that measure the rigidity of a planetary body and the susceptibility of its shape to change in response to a tidal potential.
In 1911 (some authors have 1906) Augustus Edward Hough Love introduced the values h and k which characterize the overall elastic response of the Earth to the tides.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Hagen number (Hg) is a dimensionless number used in forced flow calculations. It is the forced flow equivalent of the Grashof number and was named after the German hydraulic engineer G. H. L. Hagen.
This instance has the dimensional units string none.
This instance quantifies the process friction.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The hartree (symbol: Eh or Ha), also known as the Hartree energy, is the atomic unit of energy, named after the British physicist Douglas Hartree. It is defined as
2R∞hc, where R∞ is the Rydberg constant, h is the Planck constant and c is the speed of light.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from massperarea_yield.
This instance quantifies the process harvest.
This instance has the dimensional units string L^3 M.
This instance has a related Wikipedia page. Short extract:
The Hatta number (Ha) was developed by Shirôji Hatta, who taught at Tohoku University. It is a dimensionless parameter that compares the rate of reaction in a liquid film to the rate of diffusion through the film.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In mathematics, Hausdorff dimension (a.k.a. fractal dimension) is a measure of roughness and/or chaos that was first introduced in 1918 by mathematician Felix Hausdorff.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string L.
This instance is a narrower concept derived from depth.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from frequency.
This instance quantifies the process hearing.
This instance has the dimensional units string T^1.
This instance has a related Wikipedia page. Short extract:
In thermodynamics, heat is energy in transfer to or from a thermodynamic system, by mechanisms other than thermodynamic work or transfer of matter. The mechanisms include conduction, through direct contact of immobile bodies, or through a wall or barrier that is impermeable to matter; or radiation between separated bodies; or isochoric mechanical work done by the surroundings on the system of interest; or Joule heating by an electric current driven through the system of interest by an external system; or a combination of these.
This instance is a narrower concept derived from energy.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance is a narrower concept derived from aerodynamic_conductance.
This instance has the dimensional units string L T^1.
Alternative labels for this instance are: thermal_capacity.
This instance has a related Wikipedia page. Short extract:
.
Heat capacity or thermal capacity is a physical quantity equal to the ratio of the heat that is added to (or removed from) an object to the resulting temperature change.The SI unit of heat capacity is joule per kelvin (J/K). However, several other units of measure have been used for this quantity in the past, and are still used in certain contexts.
This instance is a narrower concept derived from capacity.
This instance has the dimensional units string L^2 M O^1 T^2.
This instance has the dimensional units string none.
Alternative labels for this instance are: heat_flux, thermal_flux, heat_flux_density, heat_flow_rate_intensity.
This instance has a related Wikipedia page. Short extract:
Heat flux or thermal flux, sometimes also referred to as heat flux density or heat flow rate intensity is a flow of energy per unit of area per unit of time. In SI its units are watts per square metre (W⋅m−2).
This instance is a narrower concept derived from energy_flux.
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from roughness_length.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
The heat transfer coefficient or film coefficient, or film effectiveness, in thermodynamics and in mechanics is the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat (i.e., the temperature difference, ΔT):
The overall heat transfer rate for combined modes is usually expressed in terms of an overall conductance or heat transfer coefficient, U. In that case, the heat transfer rate is:
Q
˙
=
h
A
(
T
2
−
T
1
)
{\displaystyle {\dot {Q}}=hA(T_{2}T_{1})}
where:
A
{\displaystyle A}
: surface area where the heat transfer takes place, m2
T
2
{\displaystyle T_{2}}
: temperature of the surrounding fluid, K
T
1
{\displaystyle T_{1}}
: temperature of the solid surface, K.The general definition of the heat transfer coefficient is:
h
=
q
Δ
T
{\displaystyle h={\frac {q}{\Delta T}}}
where:
q: heat flux, W/m2; i.e., thermal power per unit area, q = d
Q
˙
{\displaystyle {\dot {Q}}}
/dA
h: heat transfer coefficient, W/(m2•K)
ΔT: difference in temperature between the solid surface and surrounding fluid area, KIt is used in calculating the heat transfer, typically by convection or phase transition between a fluid and a solid. The heat transfer coefficient has SI units in watts per squared meter kelvin: W/(m2K).
This instance has the dimensional units string M O^1 T^3.
This instance has a related Wikipedia page. Short extract:
Height is measure of vertical distance, either vertical extent (how "tall" something or someone is) or vertical position (how "high" a point is).
For example, "The height of that building is 50 m" or "The height of an airplane is about 10,000 m".
This instance has the dimensional units string L.
This instance has the dimensional units string none.
This instance quantifies the process flood.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from diffusivity.
This instance has the dimensional units string L^2 T^1.
This instance is a narrower concept derived from distance.
This instance has the following attributes:
This instance has the dimensional units string L.
Alternative labels for this instance are: horizontal, saturated.
This instance is a narrower concept derived from hydraulic_conductivity.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from thermal_diffusivity.
This instance has the following attributes:
This instance has the dimensional units string L^2 T^1.
This instance is a narrower concept derived from turbulent_kinetic_energy_diffusivity.
This instance has the following attributes:
This instance has the dimensional units string L^2 T^1.
Alternative labels for this instance are: strahler_number, hortonstrahler_number.
This instance has a related Wikipedia page. Short extract:
In mathematics, the Strahler number or Horton–Strahler number of a mathematical tree is a numerical measure of its branching complexity.
These numbers were first developed in hydrology by Robert E. Horton (1945) and Arthur Newell Strahler (1952, 1957); in this application, they are referred to as the Strahler stream order and are used to define stream size based on a hierarchy of tributaries.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string M T^2.
This instance quantifies the process precipitation.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
Hydration energy (also hydration enthalpy) is the amount of energy released when one mole of ions undergo hydration which is a special case of solvation. It is particular special case of dissolution energy, with the solvent being water.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process hydration.
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
Hydraulic conductivity, symbolically represented as
K
{\displaystyle K}
, is a property of vascular plants, soils and rocks, that describes the ease with which a fluid (usually water) can move through pore spaces or fractures. It depends on the intrinsic permeability of the material, the degree of saturation, and on the density and viscosity of the fluid.
This instance is a narrower concept derived from conductivity.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from depthvsdischarge_coefficient.
This instance has the dimensional units string none.
This instance is a narrower concept derived from depthvsdischarge_exponent.
This instance has the dimensional units string none.
This instance is a narrower concept derived from depthvshalfwidth_exponent.
This instance has the dimensional units string none.
This instance is a narrower concept derived from slopevsdischarge_coefficient.
This instance has the dimensional units string none.
This instance is a narrower concept derived from slopevsdischarge_exponent.
This instance has the dimensional units string none.
This instance is a narrower concept derived from speedvsdischarge_coefficient.
This instance has the dimensional units string none.
This instance is a narrower concept derived from speedvsdischarge_exponent.
This instance has the dimensional units string none.
This instance is a narrower concept derived from widthvsdischarge_coefficient.
This instance has the dimensional units string none.
This instance is a narrower concept derived from widthvsdischarge_exponent.
This instance has the dimensional units string none.
This instance is a narrower concept derived from head.
This instance has the dimensional units string L.
This instance is a narrower concept derived from radius.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from roughness.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process hydrogenation.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from pressure_head.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from volume_fraction.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from identification.
This instance is a narrower concept derived from weight.
This instance has the following attributes:
This instance has the dimensional units string L M T^2.
This instance is a narrower concept derived from depth.
This instance quantifies the process impaction.
This instance has the dimensional units string L.
This instance is a narrower concept derived from force.
This instance quantifies the process impaction.
This instance has the dimensional units string L M T^2.
This instance is a narrower concept derived from impulse.
This instance quantifies the process impaction.
This instance has the dimensional units string L M T^1.
This instance is a narrower concept derived from time.
This instance quantifies the process impaction.
This instance has the dimensional units string T.
This instance is a narrower concept derived from velocity.
This instance quantifies the process impaction.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
Impedance is the complexvalued generalization of resistance.
This instance has a related Wikipedia page. Short extract:
In classical mechanics, impulse (symbolized by J or Imp) is the integral of a force, F, over the time interval, t, for which it acts. Since force is a vector quantity, impulse is also a vector in the same direction.
This instance has the dimensional units string L M T^1.
This instance is a narrower concept derived from fluorescence.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Incidence in epidemiology is a measure of the probability of occurrence of a given medical condition in a population within a specified period of time. Although sometimes loosely expressed simply as the number of new cases during some time period, it is better expressed as a proportion or a rate with a denominator.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance is a narrower concept derived from energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from latent_heat_energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from sensible_heat_energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
This instance has the dimensional units string L.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string O.
This instance is a narrower concept derived from period.
This instance quantifies the process incubation.
This instance has a related Wikipedia page. Short extract:
Indentation hardness tests are used in mechanical engineering to determine the hardness of a material to deformation. Several such tests exist, wherein the examined material is indented until an impression is formed; these tests can be performed on a macroscopic or microscopic scale.
This instance is a narrower concept derived from mechanical_hardness.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Independence is a condition of a person, nation, country, or state in which its residents and population, or some portion thereof, exercise selfgovernment, and usually sovereignty, over the territory. The opposite of independence is the status of a dependent territory.
This instance has a related Wikipedia page. Short extract:
Inertia is the resistance, of any physical object, to any change in its velocity. This includes changes to the object's speed, or direction of motion.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process infiltration.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from depth.
This instance quantifies the process ponding. This instance quantifies the process infiltration.
This instance has the dimensional units string L.
This instance is a narrower concept derived from time.
This instance quantifies the process ponding. This instance quantifies the process infiltration.
This instance has the dimensional units string T.
This instance has a related Wikipedia page. Short extract:
Infiltration is the process by which water on the ground surface enters the soil. It is commonly used in both hydrology and soil sciences.
This instance quantifies the process infiltration.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process infiltration.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from pressure.
This instance quantifies the process inflation.
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from altitude.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from angular_momentum.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from depth.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from elevation.
This instance has the following attributes:
This instance has the dimensional units string L.
Alternative labels for this instance are: initial.
This instance is a narrower concept derived from hydraulic_conductivity.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from latitude.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance is a narrower concept derived from length.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from depth.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from longitude.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass.
This instance has the dimensional units string M.
This instance is a narrower concept derived from depth.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from normalized_volume_fraction.
This instance has the dimensional units string none.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from thickness.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from time_step.
This instance has the following attributes:
This instance has the dimensional units string T.
This instance is a narrower concept derived from velocity.
This instance has the following attributes:
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from volume.
This instance has the following attributes:
This instance has the dimensional units string L^3.
This instance is a narrower concept derived from volume_fraction.
This instance has the dimensional units string none.
This instance is a narrower concept derived from precipitation_volume_flux.
This instance quantifies the process precipitation.
This instance has the dimensional units string L T^1.
Alternative labels for this instance are: volume_velocity, volumetric_flow_rate, discharge.
This instance has a related Wikipedia page. Short extract:
In physics and engineering, in particular fluid dynamics and hydrometry, the volumetric flow rate (also known as volume flow rate, rate of fluid flow or volume velocity) is the volume of fluid which passes per unit time; usually represented by the symbol Q (sometimes V̇). The SI unit is m3/s (cubic metres per second).
This instance is a narrower concept derived from volume_flow_rate.
This instance has the following attributes:
This instance quantifies the process flowing.
This instance has the dimensional units string L^3 T^1.
This instance has a related Wikipedia page. Short extract:
Intensity may refer to:
This instance has a related Wikipedia page. Short extract:
Interception refers to precipitation that does not reach the soil, but is instead intercepted by the leaves, branches of plants and the forest floor. It occurs in the canopy (i.e.
This instance is a narrower concept derived from capacity.
This instance quantifies the process interception.
This instance has the dimensional units string L^3 T^1.
This instance is a narrower concept derived from energy_flux_fraction.
This instance quantifies the process interception.
This instance has the dimensional units string none.
This instance quantifies the process interception.
This instance has the dimensional units string none.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process interception.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In thermodynamics, the internal energy of a system is the total energy contained within the system. It is the energy necessary to create or prepare the system in any given state, but does not include the kinetic energy of motion of the system as a whole, nor the potential energy of the system as a whole due to external force fields which includes the energy of displacement of the system's surroundings.
This instance is a narrower concept derived from energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
Interoception is contemporarily defined as the sense of the internal state of the body. These can be both conscious and nonconscious.
This instance is a narrower concept derived from angular_frequency.
This instance has the following attributes:
This instance has the dimensional units string T^1.
Alternative labels for this instance are: electrical_resistivity, specific_conductance.
This instance has the dimensional units string L^3 M T^3 I^2.
This instance has the dimensional units string none.
This instance has the dimensional units string L^1 T.
This instance has a related Wikipedia page. Short extract:
Ionic conduction (denoted by λlambda) is the movement of an ion from one site to another through defects in the crystal lattice of a solid or aqueous solution.
Ionic conduction is one mechanism of current.
This instance is a narrower concept derived from conductivity.
This instance has the dimensional units string L^3 M^1 T^3 I^2.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the Iribarren number or Iribarren parameter – also known as the surf similarity parameter and breaker parameter – is a dimensionless parameter used to model several effects of (breaking) surface gravity waves on beaches and coastal structures. The parameter is named after the Spanish engineer Ramón Iribarren Cavanillas (1900–1967), who introduced it to describe the occurrence of wave breaking on sloping beaches.For instance, the Iribarren number is used to describe breaking wave types on beaches; or wave runup on – and reflection by – beaches, breakwaters and dikes.
This instance has the dimensional units string none.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process irrigation.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from compressibility.
This instance has the following attributes:
This instance has the dimensional units string L M^1 T^2.
This instance is a narrower concept derived from heat_capacity.
This instance has the following attributes:
This instance has the dimensional units string L^2 M O^1 T^2.
This instance is a narrower concept derived from massspecific_heat_capacity.
This instance has the following attributes:
This instance has the dimensional units string L^2 O^1 T^2.
This instance is a narrower concept derived from volumespecific_heat_capacity.
This instance has the following attributes:
This instance has the dimensional units string L^1 M O^1 T^2.
This instance is a narrower concept derived from heat_capacity.
This instance has the following attributes:
This instance has the dimensional units string L^2 M O^1 T^2.
This instance is a narrower concept derived from massspecific_heat_capacity.
This instance has the following attributes:
This instance has the dimensional units string L^2 O^1 T^2.
This instance is a narrower concept derived from volumespecific_heat_capacity.
This instance has the following attributes:
This instance has the dimensional units string L^1 M O^1 T^2.
This instance is a narrower concept derived from latitude.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance is a narrower concept derived from compressibility.
This instance has the following attributes:
This instance has the dimensional units string L M^1 T^2.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance is a narrower concept derived from turbidity.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
Alternative labels for this instance are: jolt, surge, lurch.
This instance has a related Wikipedia page. Short extract:
In physics, jerk is the rate of change of acceleration; that is, the time derivative of acceleration, and as such the second derivative of velocity, or the third time derivative of position. According to the result of dimensional analysis of jerk, [length/time3], the SI units for its magnitude are m/s3 (or m⋅s−3); this can also be expressed in standard gravity per second (g/s).
This instance has the dimensional units string L T^3.
This instance has a related Wikipedia page. Short extract:
In physics, jounce, also known as snap, is the fourth derivative of the position vector with respect to time, or the rate of change of the jerk with respect to time.
Equivalently, it is the second derivative of acceleration or the third derivative of velocity.
This instance has the dimensional units string L T^4.
This instance has a related Wikipedia page. Short extract:
V (named vee ) is the 22nd letter in the modern English alphabet and the ISO basic Latin alphabet.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Love numbers h, k, and l are dimensionless parameters that measure the rigidity of a planetary body and the susceptibility of its shape to change in response to a tidal potential.
In 1911 (some authors have 1906) Augustus Edward Hough Love introduced the values h and k which characterize the overall elastic response of the Earth to the tides.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Béla Karlovitz was a Hungarian physicist who pioneered research into the generation of electricity directly from a body of hot moving gas without any mechanical moving parts. This process is known as magnetohydrodynamic generation or MHD generation for short.
This instance has the dimensional units string none.
This instance is a narrower concept derived from price.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the Keulegan–Carpenter number, also called the period number, is a dimensionless quantity describing the relative importance of the drag forces over inertia forces for bluff objects in an oscillatory fluid flow. Or similarly, for objects that oscillate in a fluid at rest.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In number theory, Aleksandr Yakovlevich Khinchin proved that for almost all real numbers x, coefficients ai of the continued fraction expansion of x have a finite geometric mean that is independent of the value of x and is known as Khinchin's constant.
That is, for
x
=
a
0
+
1
a
1
+
1
a
2
+
1
a
3
+
1
⋱
{\displaystyle x=a_{0}+{\cfrac {1}{a_{1}+{\cfrac {1}{a_{2}+{\cfrac {1}{a_{3}+{\cfrac {1}{\ddots }}}}}}}}\;}
it is almost always true that
lim
n
→
∞
(
a
1
a
2
.
This instance has the dimensional units string none.
This instance has the dimensional units string L^2 T^1.
This instance has a related Wikipedia page. Short extract:
In physics, the kinetic energy of an object is the energy that it possesses due to its motion.
It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
This instance is a narrower concept derived from energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from energy_diffusivity.
This instance has the following attributes:
This instance has the dimensional units string L^2 T^1.
This instance is a narrower concept derived from friction_coefficient.
This instance quantifies the process friction.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Knudsen number (Kn) is a dimensionless number defined as the ratio of the molecular mean free path length to a representative physical length scale. This length scale could be, for example, the radius of a body in a fluid.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
Alternative labels for this instance are: lame_lambda_parameter.
This instance has a related Wikipedia page. Short extract:
In continuum mechanics, the Lamé parameters (also called the Lamé coefficients, Lamé constants or Lamé moduli) are two materialdependent quantities denoted by λ and μ that arise in strainstress relationships. In general, λ and μ are individually referred to as Lamé's first parameter and Lamé's second parameter, respectively.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
The Laplace number (La), also known as the Suratman number (Su), is a dimensionless number used in the characterization of free surface fluid dynamics. It represents a ratio of surface tension to the momentumtransport (especially dissipation) inside a fluid.
This instance has the dimensional units string none.
This instance has the dimensional units string L^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from massspecific_heat.
This instance quantifies the process fusion.
This instance has the dimensional units string L^2 T^2.
This instance is a narrower concept derived from massspecific_heat_capacity.
This instance quantifies the process fusion.
This instance has the dimensional units string L^2 O^1 T^2.
This instance is a narrower concept derived from molespecific_heat.
This instance quantifies the process fusion.
This instance has the dimensional units string L^2 M T^2 N^1.
This instance is a narrower concept derived from heat_aerodynamic_conductance.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from heat_energy_flux.
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from heat_transfer_coefficient.
This instance has the dimensional units string M O^1 T^3.
This instance is a narrower concept derived from massspecific_heat.
This instance has the dimensional units string L^2 T^2.
This instance is a narrower concept derived from molespecific_heat.
This instance has the dimensional units string L^2 M T^2 N^1.
This instance is a narrower concept derived from massspecific_heat.
This instance quantifies the process sublimation.
This instance has the dimensional units string L^2 T^2.
This instance is a narrower concept derived from massspecific_heat_capacity.
This instance quantifies the process sublimation.
This instance has the dimensional units string L^2 O^1 T^2.
This instance is a narrower concept derived from molespecific_heat.
This instance quantifies the process sublimation.
This instance has the dimensional units string L^2 M T^2 N^1.
This instance is a narrower concept derived from massspecific_heat.
This instance quantifies the process vaporization.
This instance has the dimensional units string L^2 T^2.
This instance is a narrower concept derived from massspecific_heat_capacity.
This instance quantifies the process vaporization.
This instance has the dimensional units string L^2 O^1 T^2.
This instance is a narrower concept derived from molespecific_heat.
This instance quantifies the process vaporization.
This instance has the dimensional units string L^2 M T^2 N^1.
This instance is a narrower concept derived from volume_flux.
This instance has the dimensional units string L T^1.
Alternative labels for this instance are: north_coordinate.
This instance has a related Wikipedia page. Short extract:
In geography, latitude is a geographic coordinate that specifies the north–south position of a point on the Earth's surface. Latitude is an angle (defined below) which ranges from 0° at the Equator to 90° (North or South) at the poles.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Leaf area index (LAI) is a dimensionless quantity that characterizes plant canopies. It is defined as the onesided green leaf area per unit ground surface area (LAI = leaf area / ground area, m2 / m2) in broadleaf canopies.
This instance has the dimensional units string none.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process leakage.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
Length is a measure of distance. In the International System of Quantities, length is any quantity with dimension distance.
This instance has the dimensional units string L.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^1.
This instance is a narrower concept derived from depth.
This instance has the dimensional units string L.
This instance is a narrower concept derived from volume_flux.
This instance has the following attributes:
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
The Lewis number (Le) is a dimensionless number defined as the ratio of thermal diffusivity to mass diffusivity. It is used to characterize fluid flows where there is simultaneous heat and mass transfer.
This instance has the dimensional units string none.
Alternative labels for this instance are: lifespan.
This instance has a related Wikipedia page. Short extract:
Product lifetime or product lifespan is the time interval from when a product is sold to when it is discarded. It is slightly different from service life because the latter consider only the effective time the product is used.Product lifetime represent an important area of enquiry with regards to product design, the circular economy and sustainable development.
This instance is a narrower concept derived from travel_distance.
This instance quantifies the process travel.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
The lift coefficient (CL) is a dimensionless coefficient that relates the lift generated by a lifting body to the fluid density around the body, the fluid velocity and an associated reference area. A lifting body is a foil or a complete foilbearing body such as a fixedwing aircraft.
This instance quantifies the process lift.
This instance has the dimensional units string none.
This instance is a narrower concept derived from force.
This instance quantifies the process lift.
This instance has the dimensional units string L M T^2.
This instance is a narrower concept derived from identification.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In Newtonian mechanics, linear momentum, translational momentum, or simply momentum (pl. momenta) is the product of the mass and velocity of an object.
This instance is a narrower concept derived from momentum.
This instance has the dimensional units string L M T^1.
This instance has a related Wikipedia page. Short extract:
In everyday use and in kinematics, the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar quantity. The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of an object's speed and direction of motion (e.g.
This instance is a narrower concept derived from velocity.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In the physical sciences, the wavenumber (also wave number or repetency) is the spatial frequency of a wave, measured in cycles per unit distance or radians per unit distance. Whereas temporal frequency can be thought of as the number of waves per unit time, wavenumber is the number of waves per unit distance.
This instance is a narrower concept derived from wavenumber.
This instance has the dimensional units string L^1 I.
This instance is a narrower concept derived from rise_time.
This instance quantifies the process rising.
This instance has the dimensional units string T.
This instance has a related Wikipedia page. Short extract:
The Lockhart–Martinelli parameter (
χ
{\displaystyle \chi }
) is a dimensionless number used in internal twophase flow calculations. It expresses the liquid fraction of a flowing fluid.
This instance has the dimensional units string none.
This instance is a narrower concept derived from displacement_length.
This instance has the dimensional units string L.
This instance is a narrower concept derived from heat_roughness_length.
This instance has the dimensional units string L.
This instance is a narrower concept derived from roughness_length.
This instance has the dimensional units string L.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
Alternative labels for this instance are: east_coordinate.
This instance has a related Wikipedia page. Short extract:
Longitude (, AU and UK also ), is a geographic coordinate that specifies the east–west position of a point on the Earth's surface, or the surface of a celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek letter lambda (λ).
This instance has the dimensional units string none.
This instance is a narrower concept derived from energy.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^2 M T^2.
This instance quantifies the process detection.
This instance has the dimensional units string none.
This instance quantifies the process hearing.
This instance has the dimensional units string T^1.
This instance has the dimensional units string none.
Alternative labels for this instance are: luminous_efficacy.
This instance has a related Wikipedia page. Short extract:
Luminous efficacy is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power, measured in lumens per watt in the International System of Units (SI).
This instance is a narrower concept derived from efficiency.
This instance has the dimensional units string L^2 M^1 T^3.
This instance has a related Wikipedia page. Short extract:
In plasma physics, the Lundquist number (denoted by
S
{\displaystyle S}
) is a dimensionless ratio which compares the timescale of an Alfvén wave crossing to the timescale of resistive diffusion. It is a special case of the Magnetic Reynolds number when the Alfvén velocity is the typical velocity scale of the system, and is given by
S
=
L
v
A
η
,
{\displaystyle S={\frac {Lv_{A}}{\eta }},}
where
L
{\displaystyle L}
is the typical length scale of the system,
η
{\displaystyle \eta }
is the magnetic diffusivity and
v
A
{\displaystyle v_{A}}
is the Alfvén velocity of the plasma.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the Mach number (M or Ma) (; German: [max]) is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound.
M
=
u
c
,
{\displaystyle \mathrm {M} ={\frac {u}{c}},}
where:
M is the Mach number,
u is the local flow velocity with respect to the boundaries (either internal, such as an object immersed in the flow, or external, like a channel), and
c is the speed of sound in the medium.By definition, at Mach 1, the local flow velocity u is equal to the speed of sound.
This instance has the dimensional units string none.
Alternative labels for this instance are: magnetic_flux_density, magneticfield.
This instance has the dimensional units string M T^2 I^1.
Alternative labels for this instance are: magneticfield, magneticfield_strength, magneticfield_intensity, magnetizingfield.
This instance has the dimensional units string L^1 I.
Alternative labels for this instance are: magnetization.
This instance has a related Wikipedia page. Short extract:
In classical electromagnetism, magnetization or magnetic polarization is the vector field that expresses the density of permanent or induced magnetic dipole moments in a magnetic material. The origin of the magnetic moments responsible for magnetization can be either microscopic electric currents resulting from the motion of electrons in atoms, or the spin of the electrons or the nuclei.
This instance has the dimensional units string L^1 I.
This instance has a related Wikipedia page. Short extract:
The magnetic diffusivity is a parameter in plasma physics which appears in the magnetic Reynolds number. It has SI units of m²/s and is defined as:
η
=
1
μ
0
σ
0
{\displaystyle \eta ={\frac {1}{\mu _{0}\sigma _{0}}}}
,while in Gaussian units it can be defined as
η
=
c
2
4
π
σ
0
{\displaystyle \eta ={\frac {c^{2}}{4\pi \sigma _{0}}}}
.In the above,
μ
0
{\displaystyle \mu _{0}}
is the permeability of free space,
c
{\displaystyle c}
is the speed of light, and
σ
0
{\displaystyle \sigma _{0}}
is the electrical conductivity of the material in question.
This instance is a narrower concept derived from diffusivity.
This instance has the dimensional units string L^2 T^1.
This instance has a related Wikipedia page. Short extract:
In electromagnetism, permeability is the measure of the ability of a material to support the formation of a magnetic field within itself otherwise known as distributed inductance in Transmission Line Theory. Hence, it is the degree of magnetization that a material obtains in response to an applied magnetic field.
This instance is a narrower concept derived from permeability.
This instance has the dimensional units string L M T^2 I^2.
This instance has a related Wikipedia page. Short extract:
In electromagnetism, permeability is the measure of the ability of a material to support the formation of a magnetic field within itself otherwise known as distributed inductance in Transmission Line Theory. Hence, it is the degree of magnetization that a material obtains in response to an applied magnetic field.
This instance has the dimensional units string L M T^2 I^2.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The magnetic Reynolds number (Rm) is the magnetic analogue of the Reynolds number, a fundamental dimensionless group that
occurs in magnetohydrodynamics. It gives an estimate of the relative effects of advection or induction of a magnetic field by the motion of a conducting medium, often a fluid, to magnetic diffusion.
This instance has the dimensional units string none.
Alternative labels for this instance are: volume_magnetic_susceptibility.
This instance has a related Wikipedia page. Short extract:
In electromagnetism, the magnetic susceptibility (Latin: susceptibilis, "receptive"; denoted χ) is a measure of how much a material will become magnetized in an applied magnetic field. Mathematically, it is the ratio of magnetization M (magnetic moment per unit volume) to the applied magnetizing field intensity H. This allows a simple classification of most materials' response to an applied magnetic field into two categories: an alignment with the magnetic field, χ>0, called paramagnetism, or an alignment against the field, χ<0, called diamagnetism.
This instance is a narrower concept derived from susceptibility.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In mathematics, magnitude is the size of a mathematical object, a property which determines whether the object is larger or smaller than other objects of the same kind. More formally, an object's magnitude is the displayed result of an ordering (or ranking) of the class of objects to which it belongs.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string T^2.
This instance quantifies the process dragging.
This instance has the dimensional units string L M T^2.
This instance has the dimensional units string L^1.
This instance has the dimensional units string L^1 T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 O.
This instance quantifies the process lift.
This instance has the dimensional units string L M T^2.
This instance has the dimensional units string L M T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L T^1.
This instance quantifies the process drifting.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string T^2.
This instance has the dimensional units string L^2 T^1.
This instance has the dimensional units string none.
This instance has the dimensional units string L^0.33 T.
This instance is a narrower concept derived from year.
This instance quantifies the process manufacture.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Marangoni number (Ma) is the dimensionless number that balances thermal transport via flow (convection) due to a gradient in surface tension, with thermal diffusion. The number is named after Italian scientist Carlo Marangoni, although its use dates from the 1950s and it was neither discovered nor used by Carlo Marangoni.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In combustion engineering and explosion studies, the Markstein number characterizes the effect of local heat release of a propagating flame on variations in the surface topology along the flame and the associated local flame front curvature. The dimensionless Markstein number is defined as:
M
=
L
δ
L
{\displaystyle {\mathcal {M}}={\frac {\mathcal {L}}{\delta _{L}}}}
where
L
{\displaystyle {\mathcal {L}}}
is the Markstein length, and
δ
L
{\displaystyle \delta _{L}}
is the characteristic laminar flame thickness.
This instance has the dimensional units string none.
Alternative labels for this instance are: invariant_mass, intrinsic_mass, proper_mass, rest_mass.
This instance has a related Wikipedia page. Short extract:
Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies.
This instance has the dimensional units string M.
This instance is a narrower concept derived from contributing_area.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from massperarea_density.
This instance quantifies the process accumulation.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from massperarea_density.
This instance quantifies the process addition.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from massperarea_density.
This instance quantifies the process denitrification.
This instance has the dimensional units string L^2 M.
Alternative labels for this instance are: surface_density, areal_density, density_thickness, superficial_density.
This instance has a related Wikipedia page. Short extract:
The areal density (also known as area density, surface density, superficial density, areic density, mass thickness, or density thickness) of a twodimensional object is calculated as the mass per unit area. The SI derived unit is: kilogram per square metre (kg·m−2).
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from massperarea_rate.
This instance quantifies the process deposition.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from massperarea_density.
This instance quantifies the process emission.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from massperarea_density.
This instance quantifies the process fixation.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from massperarea_density.
This instance quantifies the process immobilization.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from massperarea_density.
This instance quantifies the process mineralization.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from massperarea_density.
This instance quantifies the process nitrification.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from massperarea_rate.
This instance quantifies the process production.
This instance has the dimensional units string L^2 M T^1.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from massperarea_rate.
This instance quantifies the process respiration.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from massperarea_density.
This instance quantifies the process volatilization.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from yield.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from radioactivity.
This instance has the dimensional units string T^1.
This instance is a narrower concept derived from capacity.
This instance has the dimensional units string M T^1.
This instance is a narrower concept derived from yield.
This instance has the dimensional units string M T^1.
This instance is a narrower concept derived from density.
This instance has the dimensional units string M.
This instance is a narrower concept derived from alkalinity.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from capacity.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from masspervolume_rate.
This instance quantifies the process demand.
This instance has the dimensional units string L^3 M T^1.
Alternative labels for this instance are: volumetric_mass_density.
This instance has a related Wikipedia page. Short extract:
The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The symbol most often used for density is ρ (the lower case Greek letter rho), although the Latin letter D can also be used.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from radioactivity.
This instance has the dimensional units string L^3 M.
This instance has the dimensional units string L^3 M T^1.
This instance is a narrower concept derived from salinity.
This instance has the dimensional units string L^3 M.
This instance has a related Wikipedia page. Short extract:
Solubility is the property of a solid, liquid or gaseous chemical substance called solute to dissolve in a solid, liquid or gaseous solvent. The solubility of a substance fundamentally depends on the physical and chemical properties of the solute and solvent as well as on temperature, pressure and presence of other chemicals (including changes to the pH) of the solution.
This instance is a narrower concept derived from solubility.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from turbidity.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from massperwidth_rate.
This instance quantifies the process flowing.
This instance has the dimensional units string L^1 M T^1.
This instance has the dimensional units string L^1 M T^1.
This instance has the dimensional units string L^2 T^2.
This instance has the dimensional units string L^2 O^1 T^2.
Alternative labels for this instance are: massspecific_enthalpy.
This instance has the dimensional units string L^2 T^2.
This instance is a narrower concept derived from capacity.
This instance has the dimensional units string L^2 O^1 T^2.
This instance has the dimensional units string M T^1 I^1.
This instance is a narrower concept derived from mass_rate.
This instance quantifies the process addition.
This instance has the dimensional units string M T^1.
This instance is a narrower concept derived from aerodynamic_conductance.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
In chemistry, the mass concentration ρi (or γi) is defined as the mass of a constituent mi divided by the volume of the mixture V:
ρ
i
=
m
i
V
.
{\displaystyle \rho _{i}={\frac {m_{i}}{V}}.}
For a pure chemical the mass concentration equals its density (mass divided by volume); thus the mass concentration of a component in a mixture can be called the density of a component in a mixture.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from mass_concentration.
This instance quantifies the process demand.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from mass_rate.
This instance quantifies the process demand.
This instance has the dimensional units string M T^1.
Alternative labels for this instance are: diffusion_coefficient.
This instance has a related Wikipedia page. Short extract:
Diffusivity, mass diffusivity or diffusion coefficient is a proportionality constant between the molar flux due to molecular diffusion and the gradient in the concentration of the species (or the driving force for diffusion). Diffusivity is encountered in Fick's law and numerous other equations of physical chemistry.
This instance is a narrower concept derived from diffusivity.
This instance has the dimensional units string L^2 T^1.
This instance is a narrower concept derived from mass_rate.
This instance quantifies the process emission.
This instance has the dimensional units string M T^1.
This instance has a related Wikipedia page. Short extract:
In physics and engineering, mass flow rate is the mass of a substance which passes per unit of time. Its unit is kilogram per second in SI units, and slug per second or pound per second in US customary units.
This instance is a narrower concept derived from mass_rate.
This instance quantifies the process flowing.
This instance has the dimensional units string M T^1.
This instance has a related Wikipedia page. Short extract:
In physics and engineering, mass flux is the rate of mass flow per unit area, perfectly overlapping with the momentum density, the momentum per unit volume. The common symbols are j, J, q, Q, φ, or Φ (Greek lower or capital Phi), sometimes with subscript m to indicate mass is the flowing quantity.
This instance has the dimensional units string L^2 M T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass_rate.
This instance quantifies the process immobilization.
This instance has the dimensional units string M T^1.
This instance is a narrower concept derived from mass_rate.
This instance quantifies the process leaching.
This instance has the dimensional units string M T^1.
This instance is a narrower concept derived from mass_rate.
This instance quantifies the process mineralization.
This instance has the dimensional units string M T^1.
This instance is a narrower concept derived from mixing_ratio.
This instance has the dimensional units string none.
This instance is a narrower concept derived from number_count.
This instance has the dimensional units string none.
This instance has the dimensional units string M T^1.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string M T^1.
This instance has a related Wikipedia page. Short extract:
In engineering, the mass transfer coefficient is a diffusion rate constant that relates the mass transfer rate, mass transfer area, and concentration change as driving force:
k
c
=
n
˙
A
A
Δ
c
A
{\displaystyle k_{c}={\frac {{\dot {n}}_{A}}{A\Delta c_{A}}}}
Where:
k
c
{\displaystyle k_{c}}
is the mass transfer coefficient [mol/(s·m2)/(mol/m3)], or m/s
n
˙
A
{\displaystyle {\dot {n}}_{A}}
is the mass transfer rate [mol/s]
A
{\displaystyle A}
is the effective mass transfer area [m2]
Δ
c
A
{\displaystyle \Delta c_{A}}
is the driving force concentration difference [mol/m3].This can be used to quantify the mass transfer between phases, immiscible and partially miscible fluid mixtures (or between a fluid and a porous solid). Quantifying mass transfer allows for design and manufacture of separation process equipment that can meet specified requirements, estimate what will happen in real life situations (chemical spill), etc.
This instance has the dimensional units string L T^1.
Alternative labels for this instance are: mass_transfer_rate.
This instance has a related Wikipedia page. Short extract:
Mass transfer is the net movement of mass from one location, usually meaning stream, phase, fraction or component, to another. Mass transfer occurs in many processes, such as absorption, evaporation, drying, precipitation, membrane filtration, and distillation.
This instance is a narrower concept derived from mass_rate.
This instance quantifies the process transportation.
This instance has the dimensional units string M T^1.
This instance is a narrower concept derived from mass_rate.
This instance quantifies the process volatilization.
This instance has the dimensional units string M T^1.
This instance is a narrower concept derived from time_step.
This instance has the dimensional units string T.
This instance is a narrower concept derived from normal_curvature.
This instance has the dimensional units string L^1.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string T.
This instance has the dimensional units string L.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^2 M T^3.
This instance has the dimensional units string none.
This instance has the dimensional units string O.
This instance is a narrower concept derived from curvature.
This instance has the dimensional units string L^1.
This instance is a narrower concept derived from depth.
This instance has the dimensional units string L.
This instance is a narrower concept derived from diameter.
This instance has the dimensional units string L.
This instance is a narrower concept derived from distance.
This instance has the dimensional units string L.
This instance is a narrower concept derived from height.
This instance has the dimensional units string L.
This instance is a narrower concept derived from length.
This instance has the dimensional units string L.
This instance is a narrower concept derived from masspervolume_density.
This instance has the dimensional units string L^3 M.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance has the dimensional units string O.
This instance is a narrower concept derived from slope.
This instance has the dimensional units string none.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from subsidence_rate.
This instance quantifies the process subsidence.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
Mechanical efficiency is a dimensionless number that measures the effectiveness of a machine in transforming the power input to the device to power output. A machine is a mechanical linkage in which force is applied at one point, and the force does work moving a load at another point.
This instance is a narrower concept derived from efficiency.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Hardness is a measure of the resistance to localized plastic deformation induced by either mechanical indentation or abrasion. Some materials (e.g.
This instance is a narrower concept derived from hardness.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Mechanical impedance is a measure of how much a structure resists motion when subjected to a harmonic force. It relates forces with velocities acting on a mechanical system.
This instance is a narrower concept derived from impedance.
This instance has the dimensional units string L^4 M T^1.
This instance quantifies the process melting.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process melting.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process melting.
This instance has the dimensional units string L T^1.
Alternative labels for this instance are: meltingpoint.
This instance has a related Wikipedia page. Short extract:
The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance is a narrower concept derived from energypermass_density.
This instance has the dimensional units string L^2 T^2.
This instance has the dimensional units string L.
This instance quantifies the process migration.
This instance has the dimensional units string T^1.
This instance is a narrower concept derived from time_step.
This instance has the dimensional units string T.
This instance is a narrower concept derived from normal_curvature.
This instance has the dimensional units string L^1.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance has the dimensional units string O.
This instance is a narrower concept derived from radius.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
The enthalpy of mixing (or heat of mixing or excess enthalpy) is the enthalpy liberated or absorbed from a substance upon mixing. When a substance or compound is combined with any other substance or compound the enthalpy of mixing is the consequence of the new interactions between the two substances or compounds.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process mixing.
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
In chemistry and physics, the dimensionless mixing ratio is the abundance of one component of a mixture relative to that of all other components. The term can refer either to mole ratio or mass ratio.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Modified Mercalli intensity scale (MM or MMI), descended from Giuseppe Mercalli's Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake. It measures the effects of an earthquake at a given location, distinguished from the earthquake's inherent force or strength as measured by seismic magnitude scales (such as the "Mw" magnitude usually reported for an earthquake).
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Modulus is the diminutive from the Latin word modus meaning measure or manner.
This instance has the dimensional units string none.
Alternative labels for this instance are: molality.
This instance has a related Wikipedia page. Short extract:
Molality, also called molal concentration, is a measure of the concentration of a solute in a solution in terms of amount of substance in a specified amount of mass of the solvent. This contrasts with the definition of molarity which is based on a specified volume of solution.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string M^1.
Alternative labels for this instance are: molarity.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string L^3 N.
This instance has a related Wikipedia page. Short extract:
Molar conductivity is defined as the conductivity of an electrolyte solution divided by the molar concentration of electrolyte.
This instance is a narrower concept derived from conductivity.
This instance has the dimensional units string M^1 T^3 I^2 N^1.
This instance is a narrower concept derived from mixing_ratio.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The gas constant is also known as the molar, universal, or ideal gas constant, denoted by the symbol R or R and is equivalent to the Boltzmann constant, but expressed in units of energy per temperature increment per mole, i.e. the pressure–volume product, rather than energy per temperature increment per particle.
This instance has the dimensional units string L^2 M O^1 T^2 N^1.
Alternative labels for this instance are: molespecific_enthalpy.
This instance has the dimensional units string L^2 M T^2 N^1.
This instance has the dimensional units string L^2 M O^1 T^2 N^1.
This instance is a narrower concept derived from mole_rate.
This instance quantifies the process flowing.
This instance has the dimensional units string T^1.
This instance has the dimensional units string L^2 T^1 N.
Alternative labels for this instance are: molar_fraction.
This instance has a related Wikipedia page. Short extract:
In chemistry, the mole fraction or molar fraction (xi) is defined as the amount of a constituent (expressed in moles), ni, divided by the total amount of all constituents in a mixture (also expressed in moles), ntot:
x
i
=
n
i
n
t
o
t
{\displaystyle x_{i}={\frac {n_{i}}{n_{\mathrm {tot} }}}}
The sum of all the mole fractions is equal to 1:
∑
i
=
1
N
n
i
=
n
t
o
t
;
∑
i
=
1
N
x
i
=
1
{\displaystyle \sum _{i=1}^{N}n_{i}=n_{\mathrm {tot} };\;\sum _{i=1}^{N}x_{i}=1}
The same concept expressed with a denominator of 100 is the mole percent or molar percentage or molar proportion (mol%).
The mole fraction is also called the amount fraction.
This instance has the dimensional units string none.
This instance has the dimensional units string T^1.
This instance has a related Wikipedia page. Short extract:
Relative molecular mass or molecular weight is the mass of a molecule. It is calculated as the sum of the relative atomic masses of each constituent element multiplied by the number of atoms of that element in the molecular formula.
This instance is a narrower concept derived from mass_ratio.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The mole is the base unit of amount of substance in the International System of Units (SI). Effective 20 May 2019, the mole is defined as the amount of a chemical substance that contains exactly 6.02214076×1023 (Avogadro constant) constitutive particles, e.g., atoms, molecules, ions or electrons.This definition was adopted in November 2018, revising its old definition based on the number of atoms in 12 grams of carbon12 (12C) (the isotope of carbon with relative atomic mass 12 Da by definition).
This instance has the dimensional units string N.
This instance has a related Wikipedia page. Short extract:
In physics, a moment is an expression involving the product of a distance and another physical quantity, and in this way it accounts for how the physical quantity is located or arranged.
Moments are usually defined with respect to a fixed reference point; they deal with physical quantities as measured at some distance from that reference point.
This instance has a related Wikipedia page. Short extract:
The moment magnitude scale (MMS; denoted explicitly with Mw or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on its seismic moment (a measure of the "work" done by the earthquake), expressed in terms of the familiar magnitudes of the original "Richter" magnitude scale.
Moment magnitude (Mw) is considered the authoritative magnitude scale for ranking earthquakes by size because it is more directly related to the energy of an earthquake, and does not saturate.
This instance has the dimensional units string none.
This instance is a narrower concept derived from energy.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from aerodynamic_conductance.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from diffusivity.
This instance has the dimensional units string L^2 T^1.
This instance quantifies the process flowing.
This instance has the dimensional units string L M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string none.
This instance quantifies the process precipitation.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the Morton number (Mo) is a dimensionless number used together with the Eötvös number or Bond number to characterize the shape of bubbles or drops moving in a surrounding fluid or continuous phase, c.
It is named after Rose Morton, who described it with W. L. Haberman in 1953.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The most probable number method, otherwise known as the method of Poisson zeroes, is a method of getting quantitative data on concentrations of discrete items from positive/negative (incidence) data.
There are many discrete entities that are easily detected but difficult to count.
This instance is a narrower concept derived from number_count.
This instance has the dimensional units string none.
This instance is a narrower concept derived from safety_rating.
This instance has the dimensional units string none.
Alternative labels for this instance are: list_price.
This instance has a related Wikipedia page. Short extract:
The list price, also known as the manufacturer's suggested retail price (MSRP), or the recommended retail price (RRP), or the suggested retail price (SRP), of a product is the price at which the manufacturer recommends that the retailer sell the product. The intention was to help to standardize prices among locations.
This instance is a narrower concept derived from price.
This instance has the dimensional units string none.
This instance is a narrower concept derived from turbidity.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass_mineralization_rate.
This instance quantifies the process mineralization.
This instance has the dimensional units string M T^1.
This instance is a narrower concept derived from volume_flux.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from name.
This instance is a narrower concept derived from heat_transfer_coefficient.
This instance has the dimensional units string M O^1 T^3.
This instance is a narrower concept derived from heat_transfer_coefficient.
This instance has the dimensional units string M O^1 T^3.
This instance is a narrower concept derived from mass_transfer_coefficient.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from momentum_transfer_coefficient.
This instance has the dimensional units string none.
This instance is a narrower concept derived from heat_transfer_coefficient.
This instance has the dimensional units string M O^1 T^3.
This instance is a narrower concept derived from price.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance is a narrower concept derived from massperarea_emission_density.
This instance quantifies the process emission. This instance quantifies the process nitrification.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from mass_emission_rate.
This instance quantifies the process emission. This instance quantifies the process nitrification.
This instance has the dimensional units string M T^1.
This instance is a narrower concept derived from hardness.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from countperhour_rate.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In geometry, a normal is an object such as a line or vector that is perpendicular to a given object. For example, in two dimensions, the normal line to a curve at a given point is the line perpendicular to the tangent line to the curve at the point.
This instance has the dimensional units string none.
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from curvature.
This instance has the dimensional units string L^1.
This instance is a narrower concept derived from shape_factor.
This instance has the dimensional units string none.
This instance is a narrower concept derived from shape_factor.
This instance has the dimensional units string none.
This instance is a narrower concept derived from shape_factor.
This instance has the dimensional units string none.
This instance is a narrower concept derived from distance.
This instance has the following attributes:
This instance has the dimensional units string L.
Alternative labels for this instance are: normalized.
This instance is a narrower concept derived from hydraulic_conductivity.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from volume_fraction.
This instance has the dimensional units string none.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^2 T I.
This instance has the dimensional units string L M T^3 I^1.
This instance has the dimensional units string L^2 T I.
This instance has the dimensional units string L M T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string M T^2 I^1.
This instance has the dimensional units string L^1 I.
This instance has the dimensional units string L^1 I.
This instance has the dimensional units string none.
This instance has the dimensional units string T^2.
This instance has the dimensional units string L^2 T^1.
This instance has the dimensional units string L^1.
This instance has the dimensional units string none.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^1 T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string none.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 O.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
A number is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4, and so forth.
This instance has a related Wikipedia page. Short extract:
In physics, astronomy, chemistry, biology and geography, number density (symbol: n or ρN) is an intensive quantity used to describe the degree of concentration of countable objects (particles, molecules, phonons, cells, galaxies, etc.) in physical space: threedimensional volumetric number density, twodimensional areal number density, or onedimensional linear number density. Population density is an example of areal number density.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^3.
This instance is a narrower concept derived from capacity.
This instance has the dimensional units string none.
This instance is a narrower concept derived from count.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the Nusselt number (Nu) is the ratio of convective to conductive heat transfer at a boundary in a fluid. Convection includes both advection (fluid motion) and diffusion (conduction).
This instance has the dimensional units string none.
This instance is a narrower concept derived from period.
This instance quantifies the process nutation.
This instance has a related Wikipedia page. Short extract:
Nutation (from Latin nūtātiō, "nodding, swaying") is a rocking, swaying, or nodding motion in the axis of rotation of a largely axially symmetric object, such as a gyroscope, planet, or bullet in flight, or as an intended behaviour of a mechanism. In an appropriate reference frame it can be defined as a change in the second Euler angle.
This instance quantifies the process nutation.
This instance has the dimensional units string T^1.
This instance is a narrower concept derived from area.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from angular_frequency.
This instance has the following attributes:
This instance has the dimensional units string T^1.
This instance is a narrower concept derived from mass.
This instance has the dimensional units string M.
This instance is a narrower concept derived from massperarea_yield.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from length.
This instance has the dimensional units string L.
This instance has the dimensional units string none.
This instance is a narrower concept derived from depth.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
The Ohnesorge number (Oh) is a dimensionless number that relates the viscous forces to inertial and surface tension forces.
This instance has the dimensional units string none.
This instance has the dimensional units string M.
This instance is a narrower concept derived from angle.
This instance quantifies the process opening.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In the field of optics, transparency (also called pellucidity or diaphaneity) is the physical property of allowing light to pass through the material without being scattered. On a macroscopic scale (one where the dimensions investigated are much larger than the wavelength of the photons in question), the photons can be said to follow Snell's Law.
This instance is a narrower concept derived from transparency.
This instance has the dimensional units string L.
This instance is a narrower concept derived from energy.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from period.
This instance has a related Wikipedia page. Short extract:
In gravitationally bound systems, the orbital speed of an astronomical body or object (e.g. planet, moon, artificial satellite, spacecraft, or star) is the speed at which it orbits around either the barycenter or, if the object is much less massive than the largest body in the system, its speed relative to that largest body.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
Order or ORDER or Orders may refer to:
This instance is a narrower concept derived from time.
This instance has the dimensional units string T.
This instance is a narrower concept derived from pressure.
This instance has the following attributes:
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from power.
This instance has the dimensional units string L^2 M T^3.
This instance is a narrower concept derived from mass_fraction.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance is a narrower concept derived from pressure_head.
This instance has the following attributes:
This instance has the dimensional units string L.
Alternative labels for this instance are: redox_potential, orp.
This instance has a related Wikipedia page. Short extract:
Redox potential (also known as oxidation / reduction potential, ORP, pe, ε, or
E
h
{\displaystyle E_{h}}
) is a measure of the tendency of a chemical species to acquire from or lose electrons to an electrode and thereby be reduced or oxidised, respectively. Redox potential is measured in volts (V), or millivolts (mV).
This instance is a narrower concept derived from potential.
This instance has the dimensional units string L^2 M T^3 I^1.
This instance is a narrower concept derived from pressure.
This instance has the following attributes:
This instance has the dimensional units string L^1 M T^2.
Alternative labels for this instance are: distribution_coefficient.
This instance has a related Wikipedia page. Short extract:
In the physical sciences, a partition coefficient (P) or distribution coefficient (D) is the ratio of concentrations of a compound in a mixture of two immiscible phases at equilibrium. This ratio is therefore a measure of the difference in solubility of the compound in these two phases.
This instance has the dimensional units string none.
This instance has the dimensional units string T.
This instance has the dimensional units string T.
This instance quantifies the process flowing.
This instance has the dimensional units string T.
This instance has the dimensional units string T.
This instance has a related Wikipedia page. Short extract:
The Péclet number (Pe) is a class of dimensionless numbers relevant in the study of transport phenomena in a continuum. It is named after the French physicist Jean Claude Eugène Péclet.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process evapotranspiration.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Radioactive decay (also known as nuclear decay, radioactivity or nuclear radiation) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, or a gamma ray or electron in the case of internal conversion. A material containing such unstable nuclei is considered radioactive.
This instance is a narrower concept derived from radioactivity.
This instance has the dimensional units string T^1.
This instance has a related Wikipedia page. Short extract:
Alkalinity (from Arabic "alqalī") is the capacity of water to resist changes in pH that would make the water more acidic. (It should not be confused with basicity which is an absolute measurement on the pH scale.) Alkalinity is the strength of a buffer solution composed of weak acids and their conjugate bases.
This instance is a narrower concept derived from alkalinity.
This instance has the dimensional units string L^3.
This instance is a narrower concept derived from emittance.
This instance has the dimensional units string L^1 M T^3.
This instance has a related Wikipedia page. Short extract:
A perimeter is a path that surrounds a twodimensional shape. The term may be used either for the path itself or its length—it can be thought of as the length of the outline of a shape.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
Period may refer to:
This instance is a narrower concept derived from period.
This instance has a related Wikipedia page. Short extract:
Permeability, permeable, and semipermeable may refer to:
This instance has a related Wikipedia page. Short extract:
The physical constant ε0 (pronounced as “epsilon nought” or “epsilon zero”), commonly called the vacuum permittivity, permittivity of free space or electric constant or the distributed capacitance of the vacuum, is an ideal, (baseline) physical constant, which is the value of the absolute dielectric permittivity of classical vacuum. It has an exactly defined value that can be approximated as
ε0 = 8.854187817...×10−12 F⋅m−1 (farads per metre).It is the capability of the vacuum to permit electric field lines.
This instance has the dimensional units string L^3 M^1 T^4 I^2.
Alternative labels for this instance are: dielectric_constant.
This instance has a related Wikipedia page. Short extract:
The relative permittivity of a material is its (absolute) permittivity expressed as a ratio relative to the vacuum permittivity.
Permittivity is a material property that affects the Coulomb force between two point charges in the material.
This instance has the dimensional units string dimensionless.
This instance has a related Wikipedia page. Short extract:
Perveance is a notion used in the description of charged particle beams. The value of perveance indicates how significant the space charge effect is on the beam’s motion.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
pH is a measure of acidity or alkalinity.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from velocity.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from stage.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance is a narrower concept derived from sorptivity.
This instance has the dimensional units string L T^0.5.
This instance is a narrower concept derived from state.
This instance has the following attributes:
This instance has a related Wikipedia page. Short extract:
The number π () is a mathematical constant. Originally defined as the ratio of a circle's circumference to its diameter, it now has various equivalent definitions and appears in many formulas in all areas of mathematics and physics.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Planck constant (denoted h, also called Planck's constant) is a physical constant that is the quantum of electromagnetic action, which relates the energy carried by a photon to its frequency. A photon's energy is equal to its frequency multiplied by the Planck constant.
This instance has the dimensional units string L^2 M T^1.
This instance has a related Wikipedia page. Short extract:
In physics, the Planck charge, denoted by
q
P
{\displaystyle q_{\text{P}}}
, is one of the base units in the system of natural units called Planck units. It is a quantity of electric charge defined in terms of fundamental physical constants.
This instance has the dimensional units string T I.
This instance has a related Wikipedia page. Short extract:
In physics, the Planck length, denoted ℓP, is a unit of length that is the distance light travels in one unit of Planck time. It is equal to 1.616229(38)×10−35 m.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
In physics, the Planck mass, denoted by mP, is the unit of mass in the system of natural units known as Planck units. It is approximately 0.02 milligrams.
This instance has the dimensional units string M.
This instance has a related Wikipedia page. Short extract:
Planck temperature, denoted by TP, is the unit of temperature in the system of natural units known as Planck units.
It serves as the defining unit of the Planck temperature scale.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
In quantum mechanics, the Planck time (tP) is the unit of time in the system of natural units known as Planck units. A Planck time unit is the time required for light to travel a distance of 1 Planck length in a vacuum, which is a time interval of approximately 5.39 × 10 −44 s.
This instance has the dimensional units string T.
This instance is a narrower concept derived from date.
This instance is a narrower concept derived from depth.
This instance quantifies the process planting.
This instance has the dimensional units string L.
This instance is a narrower concept derived from date.
This instance is a narrower concept derived from separation_distance.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
The beta of a plasma, symbolized by β, is the ratio of the plasma pressure (p = n kB T) to the magnetic pressure (pmag = B²/2μ0). The term is commonly used in studies of the Sun and Earth's magnetic field, and in the field of fusion power designs.
This instance has the dimensional units string none.
This instance is a narrower concept derived from count_concentration.
This instance has the dimensional units string L^3.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Poisson's ratio, denoted by the Greek letter 'nu',
ν
{\displaystyle \nu }
, and named after Siméon Poisson, is the negative of the ratio of (signed) transverse strain to (signed) axial strain. For small values of these changes,
ν
{\displaystyle \nu }
is the amount of transversal expansion divided by the amount of axial compression.
This instance has the dimensional units string none.
This instance is a narrower concept derived from radius.
This instance has the following attributes:
This instance has the dimensional units string L.
Alternative labels for this instance are: void_fraction.
This instance has a related Wikipedia page. Short extract:
Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0% and 100%.
This instance is a narrower concept derived from volume_fraction.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
A postal code (also known locally in various Englishspeaking countries throughout the world as a postcode, post code, PIN or ZIP Code) is a series of letters or digits or both, sometimes including spaces or punctuation, included in a postal address for the purpose of sorting mail.
In February 2005, 117 of the 190 member countries of the Universal Postal Union had postal code systems.
This instance has the dimensional units string none.
This instance is a narrower concept derived from energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from evaporation_volume_flux.
This instance quantifies the process evaporation.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from infiltration_volume_flux.
This instance quantifies the process infiltration.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from range_distance.
This instance has the following attributes:
This instance has the dimensional units string L.
Alternative labels for this instance are: potential.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance is a narrower concept derived from transpiration_volume_flux.
This instance quantifies the process transpiration.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from vorticity.
This instance has the following attributes:
This instance has the dimensional units string T^2.
This instance has a related Wikipedia page. Short extract:
In physics, power is the rate of doing work or of transferring heat, i.e. the amount of energy transferred or converted per unit time.
This instance has the dimensional units string L^2 M T^3.
This instance is a narrower concept derived from powerlawfluid_viscosity.
This instance has the following attributes:
This instance has the dimensional units string L^1 M T^1.
This instance is a narrower concept derived from dynamic_viscosity.
This instance has the dimensional units string L^1 M T^1.
This instance is a narrower concept derived from activation_energy.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string none.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance is a narrower concept derived from density.
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L M T^3.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^1 M T^3.
This instance has a related Wikipedia page. Short extract:
In electrical engineering, the power factor of an AC electrical power system is defined as the ratio of the real power absorbed by the load to the apparent power flowing in the circuit, and is a dimensionless number in the closed interval of −1 to 1. A power factor of less than one indicates the voltage and current are not in phase, reducing the instantaneous product of the two.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
For Newton number, see also Kissing number in the sphere packing problem.
The power number Np (also known as Newton number) is a commonly used dimensionless number relating the resistance force to the inertia force.
This instance has the dimensional units string none.
This instance is a narrower concept derived from salinity.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Prandtl number (Pr) or Prandtl group is a dimensionless number, named after the German physicist Ludwig Prandtl, defined as the ratio of momentum diffusivity to thermal diffusivity. That is, the Prandtl number is given as:
P
r
=
ν
α
=
momentum diffusivity
thermal diffusivity
=
μ
/
ρ
k
/
(
c
p
ρ
)
=
c
p
μ
k
{\displaystyle \mathrm {Pr} ={\frac {\nu }{\alpha }}={\frac {\mbox{momentum diffusivity}}{\mbox{thermal diffusivity}}}={\frac {\mu /\rho }{k/(c_{p}\rho )}}={\frac {c_{p}\mu }{k}}}
where:
ν
{\displaystyle \nu }
: momentum diffusivity (kinematic viscosity),
ν
=
μ
/
ρ
{\displaystyle \nu =\mu /\rho }
, (SI units: m2/s)
α
{\displaystyle \alpha }
: thermal diffusivity,
α
=
k
/
(
ρ
c
p
)
{\displaystyle \alpha =k/(\rho c_{p})}
, (SI units: m2/s)
μ
{\displaystyle \mu }
: dynamic viscosity, (SI units: Pa s = N s/m2)
k
{\displaystyle k}
: thermal conductivity, (SI units: W/mK)
c
p
{\displaystyle c_{p}}
: specific heat, (SI units: J/kgK)
ρ
{\displaystyle \rho }
: density, (SI units: kg/m3).Note that whereas the Reynolds number and Grashof number are subscripted with a length scale variable, the Prandtl number contains no such length scale in its definition and is dependent only on the fluid and the fluid state.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from period.
This instance quantifies the process precession.
This instance has a related Wikipedia page. Short extract:
Precession is a change in the orientation of the rotational axis of a rotating body. In an appropriate reference frame it can be defined as a change in the first Euler angle, whereas the third Euler angle defines the rotation itself.
This instance quantifies the process precession.
This instance has the dimensional units string T^1.
This instance is a narrower concept derived from duration.
This instance quantifies the process precipitation.
This instance has the dimensional units string T.
This instance is a narrower concept derived from leq_volume_flux.
This instance has the following attributes:
This instance quantifies the process precipitation.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process precipitation.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process precipitation.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from orbital_speed.
This instance has the following attributes:
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from speed.
This instance has the following attributes:
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string L^3.
Alternative labels for this instance are: total_pressure.
This instance has a related Wikipedia page. Short extract:
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
The pressure coefficient is a dimensionless number which describes the relative pressures throughout a flow field in fluid dynamics. The pressure coefficient is used in aerodynamics and hydrodynamics.
This instance has the dimensional units string none.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from head.
This instance has the dimensional units string L.
This instance is a narrower concept derived from depth.
This instance has the following attributes:
This instance has the dimensional units string L.
Alternative labels for this instance are: vertical_pressure_variation.
This instance has a related Wikipedia page. Short extract:
Vertical pressure variation is the variation in pressure as a function of elevation. Depending on the fluid in question and the context being referred to, it may also vary significantly in dimensions perpendicular to elevation as well, and these variations have relevance in the context of pressure gradient force and its effects.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from meltingpoint_temperature.
This instance has the dimensional units string O.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
A price is the quantity of payment or compensation given by one party to another in return for one unit of goods or services.. A price is influenced by both production costs and demand for the product.
This instance has the dimensional units string none.
This instance has the dimensional units string M^1.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from costperarea.
This instance quantifies the process production.
This instance has the dimensional units string L^2.
This instance quantifies the process production.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In sedimentary geology and geomorphology, the term progradation refers to the growth of a river delta farther out into the sea over time. This occurs when the mass balance of sediment into the delta is such that the volume of incoming sediment is greater than the volume of the delta that is lost through subsidence, sealevel rise, and/or erosion.
This instance quantifies the process progradation.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from force.
This instance quantifies the process propelling.
This instance has the dimensional units string L M T^2.
This instance has a related Wikipedia page. Short extract:
Proprioception ( PROHpreeoSEPshən), is the sense of selfmovement and body position. It is sometimes described as the "sixth sense".
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The psychrometric constant
γ
{\displaystyle \gamma }
relates the partial pressure of water in air to the air temperature. This lets one interpolate actual vapor pressure from paired dry and wet thermometer bulb temperature readings.
This instance has the dimensional units string L^1 M O^1 T^2.
This instance has a related Wikipedia page. Short extract:
The square root of 2, or the (1/2)th power of 2, written in mathematics as √2 or 21⁄2, is the positive algebraic number that, when multiplied by itself, gives the number 2. Technically, it is called the principal square root of 2, to distinguish it from the negative number with the same property.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how underdamped an oscillator or resonator is, and characterizes a resonator's bandwidth relative to its centre frequency.
Higher Q indicates a lower rate of energy loss relative to the stored energy of the resonator; the oscillations die out more slowly.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Quality may refer to:
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
Alternative labels for this instance are: radiant_exitance.
This instance has a related Wikipedia page. Short extract:
In radiometry, radiant exitance or radiant emittance is the radiant flux emitted by a surface per unit area, whereas spectral exitance or spectral emittance is the radiant exitance of a surface per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. This is the emitted component of radiosity.
This instance is a narrower concept derived from emittance.
This instance has the dimensional units string M T^3.
This instance has a related Wikipedia page. Short extract:
In radiometry, radiant intensity is the radiant flux emitted, reflected, transmitted or received, per unit solid angle, and spectral intensity is the radiant intensity per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. These are directional quantities.
This instance is a narrower concept derived from intensity.
This instance has the dimensional units string L^2 M T^3 ^2.
This instance is a narrower concept derived from energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the radiation stress is the depthintegrated – and thereafter phaseaveraged – excess momentum flux caused by the presence of the surface gravity waves, which is exerted on the mean flow. The radiation stresses behave as a secondorder tensor.
This instance is a narrower concept derived from stress.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
In classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length. The name comes from the Latin radius, meaning ray but also the spoke of a chariot wheel.
This instance is a narrower concept derived from length.
This instance has the dimensional units string L.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance is a narrower concept derived from distance.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string O.
This instance has the dimensional units string L.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
In fluid mechanics, the Rayleigh number (Ra) for a fluid is a dimensionless number associated with buoyancydriven flow, also known as free or natural convection. It characterises the fluid's flow regime: a value in a certain lower range denotes laminar flow; a value in a higher range, turbulent flow.
This instance has the dimensional units string none.
This instance is a narrower concept derived from distance.
This instance quantifies the process reaction.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
The standard enthalpy of reaction (denoted ΔHr⦵) is the enthalpy change that occurs in a system when matter is transformed by a given chemical reaction, when all reactants and products are in their standard states.
For a generic chemical reaction
−vA A + −vB B + ...
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process reaction.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from time.
This instance quantifies the process reaction.
This instance has the dimensional units string T.
This instance quantifies the process reaeration.
This instance has the dimensional units string L^1.
This instance is a narrower concept derived from mechanical_hardness.
This instance has the dimensional units string none.
This instance is a narrower concept derived from pricepermass.
This instance has the dimensional units string M^1.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process recharge.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process recharge.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from latitude.
This instance has the following attributes:
This instance has the dimensional units string none.
Alternative labels for this instance are: parametric_latitude.
This instance is a narrower concept derived from latitude.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from depth.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from pressure_head.
This instance has the dimensional units string L.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process evapotranspiration.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from height.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from pressure.
This instance has the following attributes:
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from stomatal_resistance.
This instance has the dimensional units string L^2 T^1 N.
Alternative labels for this instance are: reference.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
Reflectance of the surface of a material is its effectiveness in reflecting radiant energy. It is the fraction of incident electromagnetic power that is reflected at an interface.
This instance has the dimensional units string dimensionless.
This instance is a narrower concept derived from energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from angle.
This instance quantifies the process refraction.
This instance has the dimensional units string none.
Alternative labels for this instance are: rfu.
This instance has a related Wikipedia page. Short extract:
The terms "relative fluorescence units" (RFU) and "RFU peak" refer to measurements in electrophoresis methods, such as for DNA analysis. A "relative fluorescence unit" is a unit of measurement used in analysis which employs fluorescence detection.
This instance is a narrower concept derived from fluorescence.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass.
This instance has the following attributes:
This instance has the dimensional units string M.
This instance is a narrower concept derived from energy.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance is a narrower concept derived from porosity.
This instance has the dimensional units string none.
This instance is a narrower concept derived from volume_fraction.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Resilience or resilient may refer to:
This instance has a related Wikipedia page. Short extract:
Resistance may refer to:
This instance has a related Wikipedia page. Short extract:
Electrical resistivity (also called specific electrical resistance or volume resistivity) and its converse, electrical conductivity, is a fundamental property of a material that quantifies how strongly it resists or conducts the flow of electric current. A low resistivity indicates a material that readily allows the flow of electric current.
This instance is a narrower concept derived from mass.
This instance has the dimensional units string M.
This instance quantifies the process retreat.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from depth.
This instance quantifies the process reworking.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
The Reynolds number (Re) is an important dimensionless quantity in fluid mechanics used to help predict flow patterns in different fluid flow situations. At low Reynolds numbers, flows tend to be dominated by laminar (sheetlike) flow, while at high Reynolds numbers turbulence results from differences in the fluid's speed and direction, which may sometimes intersect or even move counter to the overall direction of the flow (eddy currents).
This instance has the dimensional units string none.
This instance is a narrower concept derived from stress.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
The Richardson number (Ri) is named after Lewis Fry Richardson (1881–1953). It is the dimensionless number that expresses the ratio of the buoyancy term to the flow shear term:
R
i
=
buoyancy term
flow shear term
=
g
ρ
∂
ρ
/
∂
z
(
∂
u
/
∂
z
)
2
{\displaystyle \mathrm {Ri} ={\frac {\text{buoyancy term}}{\text{flow shear term}}}={\frac {g}{\rho }}{\frac {\partial \rho /\partial z}{(\partial u/\partial z)^{2}}}}
where
g
{\displaystyle g}
is gravity,
ρ
{\displaystyle \rho }
is density, and
u
{\displaystyle u}
is a representative flow speed.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The socalled Richter magnitude scale – more accurately, Richter's magnitude scale, or just Richter magnitude – for measuring the strength ("size") of earthquakes refers to the original "magnitude scale" developed by Charles F. Richter and presented in his landmark 1935 paper, and later revised and renamed the Local magnitude scale, denoted as "ML" or "ML". Because of various shortcomings of the ML scale most seismological authorities now use other scales, such as the moment magnitude scale (Mw ), to report earthquake magnitudes, but much of the news media still refers to these as "Richter" magnitudes.
This instance has the dimensional units string none.
This instance is a narrower concept derived from time.
This instance quantifies the process rising.
This instance has the dimensional units string T.
This instance has a related Wikipedia page. Short extract:
The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test determines the hardness by measuring the depth of penetration of an indenter under a large load compared to the penetration made by a preload.
This instance has the dimensional units string none.
This instance is a narrower concept derived from rotation_rate.
This instance quantifies the process rotation. This instance quantifies the process rolling.
This instance has the dimensional units string T^1.
This instance quantifies the process rolling.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In fluid mechanics, the Roshko number (Ro) is a dimensionless number describing oscillating flow mechanisms. It is named after the American Professor of Aeronautics Anatol Roshko.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Rossby number (Ro) named for CarlGustav Arvid Rossby, is a dimensionless number used in describing fluid flow. The Rossby number is the ratio of inertial force to Coriolis force, terms

v
⋅
∇
v

∼
U
2
/
L
{\displaystyle \left\mathbf {v} \cdot \nabla \mathbf {v} \right\sim U^{2}/L}
and
Ω
×
v
∼
U
Ω
{\displaystyle \Omega \times \mathbf {v} \sim U\Omega }
in the Navier–Stokes equations, respectively.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance quantifies the process rotation.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angular_speed.
This instance quantifies the process rotation.
This instance has the dimensional units string T^1.
This instance is a narrower concept derived from kinetic_energy.
This instance has the following attributes:
This instance quantifies the process rotation.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from period.
This instance quantifies the process rotation.
This instance quantifies the process rotation.
This instance has the dimensional units string T^1.
This instance is a narrower concept derived from year.
This instance quantifies the process tilling. This instance quantifies the process rotation.
This instance has the dimensional units string none.
Alternative labels for this instance are: moment_of_inertia.
This instance has a related Wikipedia page. Short extract:
The moment of inertia, otherwise known as the angular mass or rotational inertia, of a rigid body is a quantity that determines the torque needed for a desired angular acceleration about a rotational axis; similar to how mass determines the force needed for a desired acceleration. It depends on the body's mass distribution and the axis chosen, with larger moments requiring more torque to change the body's rotation rate.
This instance is a narrower concept derived from inertia.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from length.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
The Rouse number (P or Z) is a nondimensional number in fluid dynamics which is used to define a concentration profile of suspended sediment and which also determines how sediment will be transported in a flowing fluid. It is a ratio between the sediment fall velocity
w
s
{\displaystyle w_{s}}
and the upwards velocity on the grain as a product of the von Kármán constant
κ
{\displaystyle \kappa }
and the shear velocity
u
∗
{\displaystyle u_{*}}
.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In computing, rowmajor order and columnmajor order are methods for storing multidimensional arrays in linear storage such as random access memory.
The difference between the orders lies in which elements of an array are contiguous in memory.
This instance has the dimensional units string none.
This instance is a narrower concept derived from time.
This instance quantifies the process running.
This instance has the dimensional units string T.
This instance has a related Wikipedia page. Short extract:
The runoff curve number (also called a curve number or simply CN) is an empirical parameter used in hydrology for predicting direct runoff or infiltration from rainfall excess. The curve number method was developed by the USDA Natural Resources Conservation Service, which was formerly called the Soil Conservation Service or SCS — the number is still popularly known as a "SCS runoff curve number" in the literature.
This instance quantifies the process runoff.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process runoff.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process runoff.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from area.
This instance quantifies the process rupture.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from length.
This instance has the dimensional units string L.
This instance is a narrower concept derived from speed.
This instance quantifies the process rupture.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from time.
This instance quantifies the process rupture.
This instance has the dimensional units string T.
This instance is a narrower concept derived from width.
This instance quantifies the process rupture.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
In spectroscopy, the Rydberg constant, symbol R∞ for heavy atoms or RH for hydrogen, named after the Swedish physicist Johannes Rydberg, is a physical constant relating to the electromagnetic spectra of an atom. The constant first arose as an empirical fitting parameter in the Rydberg formula for the hydrogen spectral series, but Niels Bohr later showed that its value could be calculated from more fundamental constants via his Bohr model.
This instance has the dimensional units string L^1.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance is a narrower concept derived from safety.
This instance has the dimensional units string none.
Alternative labels for this instance are: saturated, adiabatic.
This instance is a narrower concept derived from temperature_lapse_rate.
This instance has the dimensional units string L^1 O.
Alternative labels for this instance are: saturated.
This instance is a narrower concept derived from hydraulic_conductivity.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from partial_pressure.
This instance has the following attributes:
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from thickness.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from volume_fraction.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Saturation, saturated, unsaturation or unsaturated may refer to:
Alternative labels for this instance are: percent_of_saturation.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Scalar potential, simply stated, describes the situation where the difference in the potential energies of an object in two different positions depends only on the positions, not upon the path taken by the object in traveling from one position to the other. It is a scalar field in threespace: a directionless value (scalar) that depends only on its location.
This instance is a narrower concept derived from potential.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Schmidt number (Sc) is a dimensionless number defined as the ratio of momentum diffusivity (kinematic viscosity) and mass diffusivity, and is used to characterize fluid flows in which there are simultaneous momentum and mass diffusion convection processes. It was named after the German engineer Ernst Heinrich Wilhelm Schmidt (1892–1975).
This instance has the dimensional units string none.
This instance is a narrower concept derived from radius.
This instance has the dimensional units string L.
This instance is a narrower concept derived from pertime_radioactivity.
This instance quantifies the process scintillation.
This instance has the dimensional units string T^1.
This instance quantifies the process scour.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from mechanical_hardness.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Seating capacity is the number of people who can be seated in a specific space, in terms of both the physical space available, and limitations set by law. Seating capacity can be used in the description of anything ranging from an automobile that seats two to a stadium that seats hundreds of thousands of people.
This instance is a narrower concept derived from number_capacity.
This instance has the dimensional units string none.
This instance is a narrower concept derived from depth.
This instance has the dimensional units string L.
This instance is a narrower concept derived from flattening_ratio.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string T^2.
This instance has the dimensional units string L^2 M^2 T^4.
This instance has the dimensional units string L O.
This instance is a narrower concept derived from energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
Seismic moment is a quantity used by seismologists to measure the size of an earthquake. The scalar seismic moment
M
0
{\displaystyle M_{0}}
is defined by the equation
M
0
=
μ
A
D
{\displaystyle M_{0}=\mu AD}
, where
μ
{\displaystyle \mu }
is the shear modulus of the rocks involved in the earthquake (in pascals (Pa), i.e.
This instance is a narrower concept derived from moment.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from moment_energy.
This instance has the dimensional units string L^2 M T^2.
Alternative labels for this instance are: slip_vector.
This instance is a narrower concept derived from slip.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance has the following attributes:
This instance quantifies the process sliprake.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance has the following attributes:
This instance quantifies the process slipping.
This instance has the dimensional units string none.
This instance is a narrower concept derived from slip_distance.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from slip_duration.
This instance has the following attributes:
This instance has the dimensional units string T.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from heat_aerodynamic_conductance.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from heat_transfer_coefficient.
This instance has the dimensional units string M O^1 T^3.
Alternative labels for this instance are: spacing.
This instance is a narrower concept derived from distance.
This instance has the dimensional units string L.
This instance is a narrower concept derived from time.
This instance quantifies the process setting.
This instance has the dimensional units string T.
This instance is a narrower concept derived from speed.
This instance quantifies the process settling.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from amplitude.
This instance quantifies the process shaking.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
The compactness measure of a shape is a numerical quantity representing the degree to which a shape is compact. The meaning of "compact" here is not related to the topological notion of compact space.
This instance has the dimensional units string none.
This instance is a narrower concept derived from dynamic_viscosity.
This instance has the dimensional units string L^1 M T^1.
This instance is a narrower concept derived from kinematic_viscosity.
This instance has the dimensional units string L^2 T^1.
This instance has a related Wikipedia page. Short extract:
In materials science, shear modulus or modulus of rigidity, denoted by G, or sometimes S or μ, is defined as the ratio of shear stress to the shear strain:
G
=
d
e
f
τ
x
y
γ
x
y
=
F
/
A
Δ
x
/
l
=
F
l
A
Δ
x
{\displaystyle G\ {\stackrel {\mathrm {def} }{=}}\ {\frac {\tau _{xy}}{\gamma _{xy}}}={\frac {F/A}{\Delta x/l}}={\frac {Fl}{A\Delta x}}}
where
τ
x
y
=
F
/
A
{\displaystyle \tau _{xy}=F/A\,}
= shear stress
F
{\displaystyle F}
is the force which acts
A
{\displaystyle A}
is the area on which the force acts
γ
x
y
{\displaystyle \gamma _{xy}}
= shear strain. In engineering
:=
Δ
x
/
l
=
tan
θ
{\displaystyle :=\Delta x/l=\tan \theta }
, elsewhere
:=
θ
{\displaystyle :=\theta }
Δ
x
{\displaystyle \Delta x}
is the transverse displacement
l
{\displaystyle l}
is the initial lengthThe derived SI unit of shear modulus is the pascal (Pa), although it is usually expressed in gigapascals (GPa) or in thousands of pounds per square inch (ksi).
This instance is a narrower concept derived from modulus.
This instance has the dimensional units string none.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
In engineering, shear strength is the strength of a material or component against the type of yield or structural failure when the material or component fails in shear. A shear load is a force that tends to produce a sliding failure on a material along a plane that is parallel to the direction of the force.
This instance is a narrower concept derived from strength.
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from stress.
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from velocity.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
The Sherwood number (Sh) (also called the mass transfer Nusselt number) is a dimensionless number used in masstransfer operation. It represents the ratio of the convective mass transfer to the rate of diffusive mass transport, and is named in honor of Thomas Kilgore Sherwood.
This instance has the dimensional units string none.
This instance is a narrower concept derived from critical_shear_stress.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
The Shields parameter, also called the Shields criterion or Shields number, is a nondimensional number used to calculate the initiation of motion of sediment in a fluid flow. It is a nondimensionalization of a shear stress, and is typically denoted
τ
∗
{\displaystyle \tau _{\ast }}
or
θ
{\displaystyle \theta }
.
This instance has the dimensional units string none.
This instance is a narrower concept derived from energy.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from magnitude.
This instance has the dimensional units string none.
This instance is a narrower concept derived from period.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In mass transfer, the sieving coefficient is a measure of equilibration between the concentrations of two mass transfer streams. It is defined as the mean pre and postcontact concentration of the mass receiving stream divided by the pre and postcontact concentration of the mass donating stream.
This instance has the dimensional units string none.
This instance is a narrower concept derived from height.
This instance has the dimensional units string L.
This instance is a narrower concept derived from area.
This instance has the dimensional units string L^2.
This instance is a narrower concept derived from massperarea_density.
This instance has the following attributes:
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from massperarea_yield.
This instance has the dimensional units string L^3 M.
This instance is a narrower concept derived from mass.
This instance has the dimensional units string M.
Alternative labels for this instance are: sinuosity_index, sinuosity_coefficient.
This instance has a related Wikipedia page. Short extract:
Sinuosity, sinuosity index, or sinuosity coefficient of a continuously differentiable curve having at least one inflection point is the ratio of the curvilinear length (along the curve) and the Euclidean distance (straight line) between the end points of the curve. This dimensionless quantity can also be rephrased as the "actual path length" divided by the "shortest path length" of a curve.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from speed.
This instance quantifies the process sliding.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from distance.
This instance has the dimensional units string L.
This instance is a narrower concept derived from duration.
This instance has the dimensional units string T.
This instance has the dimensional units string none.
Alternative labels for this instance are: steepness.
This instance has a related Wikipedia page. Short extract:
In mathematics, the slope or gradient of a line is a number that describes both the direction and the steepness of the line. Slope is often denoted by the letter m; there is no clear answer to the question why the letter m is used for slope, but it might be from the "m for multiple" in the equation of a straight line "y = mx + b" or "y = mx + c".Slope is calculated by finding the ratio of the "vertical change" to the "horizontal change" between (any) two distinct points on a line.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Sodium adsorption ratio (SAR) is an irrigation water quality parameter used in the management of sodiumaffected soils. It is an indicator of the suitability of water for use in agricultural irrigation, as determined from the concentrations of the main alkaline and earth alkaline cations present in the water.
This instance is a narrower concept derived from sodicity.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The solar azimuth angle is the azimuth angle of the Sun's position. This horizontal coordinate defines the Sun's relative direction along the local horizon, whereas the solar zenith angle (or its complementary angle solar elevation) defines the Sun's apparent altitude.
This instance is a narrower concept derived from angle.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The solar constant (GSC) is a flux density measuring mean solar electromagnetic radiation (solar irradiance) per unit area. It is measured on a surface perpendicular to the rays, one astronomical unit (AU) from the Sun (roughly the distance from the Sun to the Earth).
This instance has the dimensional units string M T^3.
This instance has a related Wikipedia page. Short extract:
The solar zenith angle is the angle between the zenith and the centre of the Sun's disc. The solar elevation angle is the altitude of the Sun, the angle between the horizon and the centre of the Sun's disc.
This instance is a narrower concept derived from elevation_angle.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has the dimensional units string L^2 M T^3.
This instance is a narrower concept derived from time.
This instance has the dimensional units string T.
This instance has a related Wikipedia page. Short extract:
The solar zenith angle is the angle between the zenith and the centre of the Sun's disc. The solar elevation angle is the altitude of the Sun, the angle between the horizon and the centre of the Sun's disc.
This instance is a narrower concept derived from zenith_angle.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In the design of fluid bearings, the Sommerfeld number (S) is a dimensionless quantity used extensively in hydrodynamic lubrication analysis. The Sommerfeld number is very important in lubrication analysis because it contains all the variables normally specified by the designer.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In 1957 John Philip introduced the term sorptivity and defined it as a measure of the capacity of the medium to absorb or desorb liquid by capillarity.According to C Hall and W D Hoff, the sorptivity expresses the tendency of a material to absorb and transmit water and other liquids by capillarity.The sorptivity is widely used in characterizing soils and porous construction materials such as brick, stone and concrete.
Calculation of the true sorptivity required numerical iterative procedures dependent on soil water content and diffusivity.
This instance has the dimensional units string L T^0.5.
This instance has the dimensional units string none.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string T^2.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from date.
This instance has a related Wikipedia page. Short extract:
Span is the distance between two intermediate supports for a structure, e.g. a beam or a bridge.
This instance has the dimensional units string L.
This instance is a narrower concept derived from identification.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Specific ultraviolet absorbance (SUVA) is the absorbance of ultraviolet light in a water sample at a specified wavelength that is normalized for dissolved organic carbon (DOC) concentration. Specific UV absorbance (SUVA) wavelengths have analytical uses to measure the aromatic character of dissolved organic matter by detecting density of electron conjugation which is associated with aromatic bonds.
This instance has the dimensional units string L^2 M^1.
This instance is a narrower concept derived from contributing_area.
This instance has the dimensional units string L^2.
This instance has a related Wikipedia page. Short extract:
Energy density has tables of specific energies of devices and materials.Specific energy is energy per unit mass. (It is also sometimes called "energy density," though "energy density" more precisely means energy per unit volume.) It is used to quantify, for example, stored heat and other thermodynamic properties of substances such as specific internal energy, specific enthalpy, specific Gibbs free energy, and specific Helmholtz free energy.
This instance has the dimensional units string L^2 T^2.
This instance has a related Wikipedia page. Short extract:
Specific gravity is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. Apparent specific gravity is the ratio of the weight of a volume of the substance to the weight of an equal volume of the reference substance.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Specific kinetic energy is kinetic energy of an object per unit of mass.
It is defined as
e
k
=
1
2
v
2
{\displaystyle {\begin{matrix}e_{k}={\frac {1}{2}}\end{matrix}}v^{2}}
.
This instance is a narrower concept derived from specific_energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 T^2.
This instance has a related Wikipedia page. Short extract:
Specific potential energy is potential energy of an object per unit of mass of that object.
In a gravitational field it is the acceleration of gravity times height,
e
u
=
g
h
{\displaystyle e_{u}=gh}
.
This instance is a narrower concept derived from specific_energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 T^2.
This instance has a related Wikipedia page. Short extract:
The power spectrum
S
x
x
(
f
)
{\displaystyle S_{xx}(f)}
of a time series
x
(
t
)
{\displaystyle x(t)}
describes the distribution of power into frequency components composing that signal. According to Fourier analysis, any physical signal can be decomposed into a number of discrete frequencies, or a spectrum of frequencies over a continuous range.
This instance is a narrower concept derived from density.
This instance has the dimensional units string none.
Alternative labels for this instance are: spectral_exitance.
This instance has a related Wikipedia page. Short extract:
In radiometry, radiant exitance or radiant emittance is the radiant flux emitted by a surface per unit area, whereas spectral exitance or spectral emittance is the radiant exitance of a surface per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. This is the emitted component of radiosity.
This instance is a narrower concept derived from perwavelength_emittance.
This instance has the dimensional units string L^1 M T^3.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is 299,792,458 metres per second (approximately 300,000 km/s (186,000 mi/s)).
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from height.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from time.
This instance quantifies the process spinup.
This instance has the dimensional units string T.
This instance is a narrower concept derived from height.
This instance has the dimensional units string L.
This instance has the dimensional units string none.
Alternative labels for this instance are: standard_gravity.
This instance has a related Wikipedia page. Short extract:
The standard acceleration due to gravity (or standard acceleration of free fall), sometimes abbreviated as standard gravity, usually denoted by ɡ0 or ɡn, is the nominal gravitational acceleration of an object in a vacuum near the surface of the Earth. It is defined by standard as 9.80665 m/s2 (about 32.17405 ft/s2).
This instance is a narrower concept derived from gravitational_acceleration.
This instance has the following attributes:
This instance has the dimensional units string L T^2.
This instance is a narrower concept derived from count_concentration.
This instance has the dimensional units string L^3.
This instance has a related Wikipedia page. Short extract:
In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how fast light propagates through the material. It is defined as
n
=
c
v
,
{\displaystyle n={\frac {c}{v}},}
where c is the speed of light in vacuum and v is the phase velocity of light in the medium.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Stanton number, St, is a dimensionless number that measures the ratio of heat transferred into a fluid to the thermal capacity of fluid. The Stanton number is named after Thomas Edward Stanton (1865–1931).
This instance has the dimensional units string none.
This instance is a narrower concept derived from time.
This instance has the dimensional units string T.
This instance is a narrower concept derived from displacement.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from friction_coefficient.
This instance quantifies the process friction.
This instance has the dimensional units string none.
This instance is a narrower concept derived from pressure.
This instance has the following attributes:
This instance has the dimensional units string L^1 M T^2.
Alternative labels for this instance are: static.
This instance is a narrower concept derived from pressure_lapse_rate.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from stress.
This instance has the following attributes:
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
The Stefan–Boltzmann constant (also Stefan's constant), a physical constant denoted by the Greek letter σ (sigma), is the constant of proportionality in the Stefan–Boltzmann law: "the total intensity radiated over all wavelengths increases as the temperature increases", of a black body which is proportional to the fourth power of the thermodynamic temperature. The theory of thermal radiation lays down the theory of quantum mechanics, by using physics to relate to molecular, atomic and subatomic levels.
This instance has the dimensional units string O^4.
This instance has a related Wikipedia page. Short extract:
The Stefan number (St or Ste) is defined as the ratio of sensible heat to latent heat. It is given by the formula
S
t
e
=
c
p
Δ
T
L
,
{\displaystyle \mathrm {Ste} ={\frac {c_{p}\Delta T}{L}},}
where
cp is the specific heat,
cp is the specific heat of solid phase in the freezing process while cp is the specific heat of liquid phase in the melting process.
This instance has the dimensional units string none.
This instance is a narrower concept derived from count.
This instance has the dimensional units string none.
This instance is a narrower concept derived from velocity.
This instance quantifies the process drifting.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
The Stokes number (Stk), named after George Gabriel Stokes, is a dimensionless number characterising the behavior of particles suspended in a fluid flow. The Stokes number is defined as the ratio of the characteristic time of a particle (or droplet) to a characteristic time of the flow or of an obstacle, or
S
t
k
=
t
0
u
0
l
0
{\displaystyle \mathrm {Stk} ={\frac {t_{0}\,u_{0}}{l_{0}}}}
where
t
0
{\displaystyle t_{0}}
is the relaxation time of the particle (the time constant in the exponential decay of the particle velocity due to drag),
u
0
{\displaystyle u_{0}}
is the fluid velocity of the flow well away from the obstacle and
l
0
{\displaystyle l_{0}}
is the characteristic dimension of the obstacle (typically its diameter).
This instance has the dimensional units string none.
This instance is a narrower concept derived from speed.
This instance quantifies the process settling.
This instance has the dimensional units string L T^1.
Alternative labels for this instance are: inverse_of_stomatal_conductance.
This instance has a related Wikipedia page. Short extract:
By definition, stomatal conductance, usually measured in mmol m⁻² s⁻¹, is the measure of the rate of passage of carbon dioxide (CO2) entering, or water vapor exiting through the stomata of a leaf. Stomata are small pores on the top and or bottom of a leaf that are responsible for taking in CO2 and expelling water vapour.
This instance is a narrower concept derived from resistance.
This instance has the dimensional units string L^2 T^1 N.
This instance is a narrower concept derived from time.
This instance has the dimensional units string T.
This instance is a narrower concept derived from distance.
This instance quantifies the process stopping.
This instance has the dimensional units string L.
This instance is a narrower concept derived from time.
This instance quantifies the process stopping.
This instance has the dimensional units string T.
Alternative labels for this instance are: storage_capacity.
This instance is a narrower concept derived from volume.
This instance has the following attributes:
This instance has the dimensional units string L^3.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Strain rate is the change in strain (deformation) of a material with respect to time.
The strain rate at some point within the material measures the rate at which the distances of adjacent parcels of the material change with time in the neighborhood of that point.
This instance has the dimensional units string T^1.
This instance has a related Wikipedia page. Short extract:
The stream function is defined for incompressible (divergencefree) flows in two dimensions – as well as in three dimensions with axisymmetry. The flow velocity components can be expressed as the derivatives of the scalar stream function.
This instance has the dimensional units string L^2 T^1.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance has the dimensional units string L^1 M T^2.
Alternative labels for this instance are: mechanical_stress.
This instance has a related Wikipedia page. Short extract:
In continuum mechanics, stress is a physical quantity that expresses the internal forces that neighbouring particles of a continuous material exert on each other, while strain is the measure of the deformation of the material. For example, when a solid vertical bar is supporting an overhead weight, each particle in the bar pushes on the particles immediately below it.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance quantifies the process striking.
This instance has the dimensional units string none.
This instance is a narrower concept derived from length.
This instance quantifies the process stroking.
This instance has the dimensional units string L.
This instance quantifies the process stroking.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In dimensional analysis, the Strouhal number (St) is a dimensionless number describing oscillating flow mechanisms. The parameter is named after Vincenc Strouhal, a Czech physicist who experimented in 1878 with wires experiencing vortex shedding and singing in the wind.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Stuart number (N), also known as magnetic interaction parameter, is a dimensionless number of fluids, i.e. gases or liquids.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The enthalpy of sublimation, or heat of sublimation, is the heat required to change one mole of a substance from solid state to gaseous state at a given combination of temperature and pressure, usually standard temperature and pressure (STP). The heat of sublimation is usually expressed in kJ/mol, although the less customary kJ/kg is also encountered.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process sublimation.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from mass_flux.
This instance quantifies the process sublimation.
This instance has the dimensional units string L^2 M T^1.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process sublimation.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
Subsidence is the sudden sinking or gradual downward settling of the ground's surface with little or no horizontal motion. The definition of subsidence is not restricted by the rate, magnitude, or area involved in the downward movement.
This instance quantifies the process subsidence.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
In geometry, an angle subtended by an arc, line segment, or any other section of a curve is one whose two rays pass through the endpoints of the arc (or other object). The precise meaning varies with context.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance is a narrower concept derived from economic_elasticity.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Surface tension is the tendency of fluid surfaces to shrink into the minimum surface area possible. Surface tension allows insects (e.g.
This instance is a narrower concept derived from tension.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from height.
This instance quantifies the process surging.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
Susceptibility may refer to:
This instance is a narrower concept derived from period.
This instance is a narrower concept derived from angle.
This instance quantifies the process takeoff.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In geometry, the tangent line (or simply tangent) to a plane curve at a given point is the straight line that "just touches" the curve at that point. Leibniz defined it as the line through a pair of infinitely close points on the curve.
This instance has the dimensional units string none.
This instance is a narrower concept derived from curvature.
This instance has the dimensional units string L^1.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the Taylor number (Ta) is a dimensionless quantity that characterizes the importance of centrifugal "forces" or socalled inertial forces due to rotation of a fluid about an axis, relative to viscous forces.In 1923 Geoffrey Ingram Taylor introduced this quantity in his article on the stability of flow.The typical context of the Taylor number is in characterization of the Couette flow between rotating colinear cylinders or rotating concentric spheres. In the case of a system which is not rotating uniformly, such as the case of cylindrical Couette flow, where the outer cylinder is stationary and the inner cylinder is rotating, inertial forces will often tend to destabilize a system, whereas viscous forces tend to stabilize a system and damp out perturbations and turbulence.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Temperature is a physical quantity expressing hot and cold. It is measured with a thermometer calibrated in one or more temperature scales.
This instance has the dimensional units string O.
This instance has the dimensional units string L M^1 O^1 T^2.
This instance has a related Wikipedia page. Short extract:
The lapse rate is the rate at which an atmospheric variable, normally temperature in Earth's atmosphere, changes with altitude. Lapse rate arises from the word lapse, in the sense of a gradual change.
This instance has the dimensional units string L^1 O.
This instance is a narrower concept derived from depth.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from time.
This instance quantifies the process tempering.
This instance has the dimensional units string T.
This instance has a related Wikipedia page. Short extract:
Frequency is the number of occurrences of a repeating event per unit of time. It is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency.
This instance has the dimensional units string T^1.
Alternative labels for this instance are: ultimate_strength.
This instance has a related Wikipedia page. Short extract:
Ultimate tensile strength (UTS), often shortened to tensile strength (TS), ultimate strength, or Ftu within equations, is the capacity of a material or structure to withstand loads tending to elongate, as opposed to compressive strength, which withstands loads tending to reduce size. In other words, tensile strength resists tension (being pulled apart), whereas compressive strength resists compression (being pushed together).
This instance is a narrower concept derived from strength.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
Tension may refer to:
This instance is a narrower concept derived from fall_speed.
This instance has the following attributes:
This instance quantifies the process falling.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance has a related Wikipedia page. Short extract:
In soil science, the thaw depth or thaw line is the instantaneous level down to which the soil has warmed to zero degrees celsius. The active layer thickness is the maximum thaw depth over a period of two years.
This instance is a narrower concept derived from depth.
This instance quantifies the process thaw.
This instance has the dimensional units string L.
This instance is a narrower concept derived from stress_fraction.
This instance has the dimensional units string none.
This instance is a narrower concept derived from conductance.
This instance has the dimensional units string L^2 M O^1 T^3.
Alternative labels for this instance are: inverse_of_thermal_resistivity.
This instance has a related Wikipedia page. Short extract:
The thermal conductivity of a material is a measure of its ability to conduct heat. It is commonly denoted by
k
{\displaystyle k}
,
λ
{\displaystyle \lambda }
, or
κ
{\displaystyle \kappa }
.
This instance is a narrower concept derived from conductivity.
This instance has the dimensional units string L M O^1 T^3.
This instance is a narrower concept derived from energy_diffusivity.
This instance has the following attributes:
This instance has the dimensional units string L^2 T^1.
This instance has a related Wikipedia page. Short extract:
In thermodynamics, the thermal efficiency (
η
t
h
{\displaystyle \eta _{\rm {th}}}
) is a dimensionless performance measure of a device that uses thermal energy, such as an internal combustion engine, a steam turbine or a steam engine, a boiler, furnace, or a refrigerator for example. For a heat engine, thermal efficiency is the fraction of the energy added by heat (primary energy) that is converted to net work output (secondary energy).
This instance is a narrower concept derived from efficiency.
This instance has the dimensional units string none.
This instance is a narrower concept derived from energy.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from energypervolume_density.
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from expansion_coefficient.
This instance quantifies the process expansion.
This instance has the dimensional units string O^1.
This instance is a narrower concept derived from inertia.
This instance has the dimensional units string none.
Alternative labels for this instance are: energy_quality.
This instance has a related Wikipedia page. Short extract:
Energy quality is the contrast between different forms of energy, the different trophic levels in ecological systems and the propensity of energy to convert from one form to another. The concept refers to the empirical experience of the characteristics, or qualia, of different energy forms as they flow and transform.
This instance is a narrower concept derived from quality.
This instance has the dimensional units string none.
Alternative labels for this instance are: inverse_of_thermal_conductivity.
This instance has a related Wikipedia page. Short extract:
Thermal resistance is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow. Thermal resistance is the reciprocal of thermal conductance.
This instance is a narrower concept derived from resistivity.
This instance has the dimensional units string L^1 M^1 O T^3.
This instance is a narrower concept derived from duration.
This instance has the dimensional units string T.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Thickness may refer to:
This instance has the dimensional units string L.
This instance has the dimensional units string none.
This instance is a narrower concept derived from flattening_ratio.
This instance has the dimensional units string none.
Alternative labels for this instance are: TON.
This instance is a narrower concept derived from odor.
This instance has the dimensional units string none.
Alternative labels for this instance are: threshold.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process throughfall.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Time is the indefinite continued progress of existence and events that occur in apparently irreversible succession from the past, through the present, to the future. Time is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in the conscious experience.
This instance has the dimensional units string T.
This instance quantifies the process leaching.
This instance has the dimensional units string M T^1.
This instance quantifies the process volatilization.
This instance has the dimensional units string M T^1.
This instance has the dimensional units string none.
This instance has the dimensional units string O^2.
This instance has the dimensional units string L^3 M^2 T^2.
This instance has the dimensional units string L^3 M^2 T^2.
This instance has the dimensional units string T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^2.
This instance has the dimensional units string L T^2.
This instance has the dimensional units string L^2 T^2.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^2 T^1.
This instance has the dimensional units string L T^2.
This instance has the dimensional units string M T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^2.
This instance has the dimensional units string L^2 T^2.
This instance has the dimensional units string T^3.
This instance has the dimensional units string L^1 M T^3.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string T^1.
This instance has the dimensional units string O T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^3 T^1.
This instance has the dimensional units string L T^2.
This instance has the dimensional units string L^2 T^2.
This instance has the dimensional units string L T^2.
This instance has the dimensional units string L^2 T^2.
This instance has the dimensional units string L T^2.
This instance has the dimensional units string none.
This instance quantifies the process accumulation.
This instance has the dimensional units string L.
This instance quantifies the process respiration. This instance quantifies the process decomposition.
This instance has the dimensional units string L^2 M.
This instance quantifies the process leaching. This instance quantifies the process draining.
This instance has the dimensional units string L^2 M.
This instance quantifies the process evaporation.
This instance has the dimensional units string L.
This instance quantifies the process infiltration.
This instance has the dimensional units string L.
This instance quantifies the process production.
This instance has the dimensional units string L^2 M.
This instance quantifies the process precipitation.
This instance has the dimensional units string L.
This instance quantifies the process recharge.
This instance has the dimensional units string L.
This instance quantifies the process transpiration.
This instance has the dimensional units string L.
This instance quantifies the process flowing.
This instance has the dimensional units string L^3.
This instance has the dimensional units string L.
This instance has the dimensional units string M T^3.
This instance has the dimensional units string M T^3.
This instance has the dimensional units string L.
This instance quantifies the process flowing.
This instance has the dimensional units string L^3 T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L.
This instance has the dimensional units string L^2 T^1 N.
This instance quantifies the process flowing.
This instance has the dimensional units string L^3 T^1.
This instance has the dimensional units string T.
This instance is a narrower concept derived from step_count.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass.
This instance has the dimensional units string M.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from width.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
The topographic wetness index (TWI), also known as the compound topographic index (CTI), is a steady state wetness index. It is commonly used to quantify topographic control on hydrological processes.
This instance is a narrower concept derived from wetness.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Torque, moment, or moment of force is the rotational equivalent of linear force. The concept originated with the studies of Archimedes on the usage of levers.
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from density.
This instance has the dimensional units string L^1 M T^2.
Alternative labels for this instance are: dihedral_angle.
This instance has a related Wikipedia page. Short extract:
A dihedral angle is the angle between two intersecting planes. In chemistry it is the angle between planes through two sets of three atoms, having two atoms in common.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.
This instance is a narrower concept derived from pressure.
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from stopping_distance.
This instance has the following attributes:
This instance quantifies the process stopping.
This instance has the dimensional units string L.
This instance is a narrower concept derived from stopping_time.
This instance has the following attributes:
This instance quantifies the process stopping.
This instance has the dimensional units string T.
This instance has a related Wikipedia page. Short extract:
Transmittance of the surface of a material is its effectiveness in transmitting radiant energy. It is the fraction of incident electromagnetic power that is transmitted through a sample, in contrast to the transmission coefficient, which is the ratio of the transmitted to incident electric field.Internal transmittance refers to energy loss by absorption, whereas (total) transmittance is that due to absorption, scattering, reflection, etc.
This instance has the dimensional units string dimensionless.
This instance is a narrower concept derived from energy_flux.
This instance has the following attributes:
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from volume_flux.
This instance quantifies the process transpiration.
This instance has the dimensional units string L T^1.
Alternative labels for this instance are: transport_cost.
This instance has a related Wikipedia page. Short extract:
The energy cost of transport quantifies the energy efficiency of transporting an animal or vehicle from one place to another. As a dimensionless quantity, it allows for the comparison of dissimilar animals or modes of transportation.
This instance is a narrower concept derived from price.
This instance quantifies the process transportation.
This instance has the dimensional units string none.
This instance is a narrower concept derived from orbital_speed.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from speed.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from distance.
This instance quantifies the process travel.
This instance has the dimensional units string L.
This instance is a narrower concept derived from time.
This instance quantifies the process travel.
This instance has the dimensional units string T.
Alternative labels for this instance are: tu.
This instance is a narrower concept derived from fluorescence.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, turbulence or turbulent flow is fluid motion characterized by chaotic changes in pressure and flow velocity. It is in contrast to a laminar flow, which occurs when a fluid flows in parallel layers, with no disruption between those layers.Turbulence is commonly observed in everyday phenomena such as surf, fast flowing rivers, billowing storm clouds, or smoke from a chimney, and most fluid flows occurring in nature or created in engineering applications are turbulent.
Alternative labels for this instance are: turbulence_kinetic_energy.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, turbulence kinetic energy (TKE) is the mean kinetic energy per unit mass associated with eddies in turbulent flow. Physically, the turbulence kinetic energy is characterised by measured rootmeansquare (RMS) velocity fluctuations.
This instance is a narrower concept derived from kinetic_energy.
This instance has the following attributes:
This instance has the dimensional units string L^2 M T^2.
This instance is a narrower concept derived from energy_diffusivity.
This instance has the following attributes:
This instance has the dimensional units string L^2 T^1.
This instance is a narrower concept derived from radius.
This instance quantifies the process turning.
This instance has the dimensional units string L.
This instance has the dimensional units string none.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance is a narrower concept derived from countperhour_rate.
This instance has the following attributes:
This instance has the dimensional units string none.
Alternative labels for this instance are: newtons_constant.
This instance has a related Wikipedia page. Short extract:
The gravitational constant (also known as the "universal gravitational constant", the "Newtonian constant of gravitation", or the "Cavendish gravitational constant"), denoted by the letter G, is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal gravitation and in Albert Einstein's general theory of relativity.
In Newton's law, it is the proportionality constant connecting the gravitational force between two bodies
with the product of their masses and the inverse square of their distance.
This instance has the dimensional units string L^3 M^1 T^2.
This instance has the dimensional units string none.
This instance has the dimensional units string L^2 M.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L M T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance quantifies the process uplift.
This instance has the dimensional units string L T^1.
This instance quantifies the process hearing.
This instance has the dimensional units string T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from latent_heat_energy_flux.
This instance has the dimensional units string M T^3.
This instance is a narrower concept derived from sensible_heat_energy_flux.
This instance has the dimensional units string M T^3.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the Ursell number indicates the nonlinearity of long surface gravity waves on a fluid layer. This dimensionless parameter is named after Fritz Ursell, who discussed its significance in 1953.The Ursell number is derived from the Stokes wave expansion, a perturbation series for nonlinear periodic waves, in the longwave limit of shallow water – when the wavelength is much larger than the water depth.
This instance has the dimensional units string none.
This instance is a narrower concept derived from costpermass.
This instance has the dimensional units string M^1.
Alternative labels for this instance are: scs_runoff_curve_number.
This instance is a narrower concept derived from runoff_curve_number.
This instance quantifies the process runoff.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The van 't Hoff factor i (named after Dutch chemist Jacobus Henricus van 't Hoff) is a measure of the effect of a solute upon colligative properties such as osmotic pressure, relative lowering in vapor pressure, boilingpoint elevation and freezingpoint depression. The van 't Hoff factor is the ratio between the actual concentration of particles produced when the substance is dissolved and the concentration of a substance as calculated from its mass.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The enthalpy of vaporization, (symbol ∆Hvap) also known as the (latent) heat of vaporization or heat of evaporation, is the amount of energy (enthalpy) that must be added to a liquid substance, to transform a quantity of that substance into a gas. The enthalpy of vaporization is a function of the pressure at which that transformation takes place.
This instance is a narrower concept derived from enthalpy.
This instance quantifies the process vaporization.
This instance has the dimensional units string L^2 M T^2.
This instance has a related Wikipedia page. Short extract:
In probability theory and statistics, the coefficient of variation (CV), also known as relative standard deviation (RSD), is a standardized measure of dispersion of a probability distribution or frequency distribution. It is often expressed as a percentage, and is defined as the ratio of the standard deviation
σ
{\displaystyle \ \sigma }
to the mean
μ
{\displaystyle \ \mu }
(or its absolute value,

μ

{\displaystyle \mu }
).
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
A vehicle identification number (VIN) is a unique code, including a serial number, used by the automotive industry to identify individual motor vehicles, towed vehicles, motorcycles, scooters and mopeds, as defined in ISO 3779 (content and structure) and ISO 4030 (location and attachment).
VINs were first used in 1954 in the United States.
This instance has the dimensional units string none.
This instance is a narrower concept derived from head.
This instance has the dimensional units string L.
This instance is a narrower concept derived from diffusivity.
This instance has the dimensional units string L^2 T^1.
Alternative labels for this instance are: vertical_diffusion_coefficient.
This instance is a narrower concept derived from mass_diffusivity.
This instance has the following attributes:
This instance has the dimensional units string L^2 T^1.
Alternative labels for this instance are: vertical, saturated.
This instance is a narrower concept derived from hydraulic_conductivity.
This instance has the dimensional units string L T^1.
This instance is a narrower concept derived from thermal_diffusivity.
This instance has the following attributes:
This instance has the dimensional units string L^2 T^1.
This instance is a narrower concept derived from turbulent_kinetic_energy_diffusivity.
This instance has the following attributes:
This instance has the dimensional units string L^2 T^1.
This instance is a narrower concept derived from latitude.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance is a narrower concept derived from longitude.
This instance has the following attributes:
This instance has the dimensional units string none.
Alternative labels for this instance are: virtual, potential.
This instance is a narrower concept derived from potential_temperature.
This instance has the dimensional units string O.
Alternative labels for this instance are: virtual.
This instance is a narrower concept derived from temperature.
This instance has the dimensional units string O.
This instance has a related Wikipedia page. Short extract:
The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water.Viscosity can be conceptualized as quantifying the frictional force that arises between adjacent layers of fluid that are in relative motion.
This instance has the dimensional units string L^2 M.
This instance is a narrower concept derived from stress.
This instance has the dimensional units string L^1 M T^2.
This instance is a narrower concept derived from geometric_albedo.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Volition or will is the cognitive process by which an individual decides on and commits to a particular course of action. It is defined as purposive striving and is one of the primary human psychological functions.
Alternative labels for this instance are: electric_potential_difference, electric_pressure, electric_tension.
This instance has a related Wikipedia page. Short extract:
Voltage, electric potential difference, electric pressure or electric tension is the difference in electric potential between two points. The difference in electric potential between two points (i.e., voltage) in a static electric field is defined as the work needed per unit of charge to move a test charge between the two points.
This instance has the dimensional units string L^2 M T^3 I^1.
This instance has a related Wikipedia page. Short extract:
Volume is the quantity of threedimensional space enclosed by a closed surface, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains. Volume is often quantified numerically using the SI derived unit, the cubic metre.
This instance has the dimensional units string L^3.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from capacity.
This instance has the dimensional units string L.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string L.
This instance is a narrower concept derived from volumeperarea_storage_capacity.
This instance quantifies the process interception.
This instance has the dimensional units string L.
This instance is a narrower concept derived from volumeperarea_capacity.
This instance has the dimensional units string L.
This instance quantifies the process flowing.
This instance has the dimensional units string L^2 T^1.
Alternative labels for this instance are: inverse_of_mass_concentration.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string L^3 M^1.
This instance quantifies the process flowing.
This instance has the dimensional units string L^2 T^1.
Alternative labels for this instance are: volumetric_heat_capacity, thermal_inertia.
This instance has a related Wikipedia page. Short extract:
For a table of volumetric heat capacities, see Heat capacity#Table of specific heat capacities.Volumetric heat capacity (VHC), also termed volumespecific heat capacity, describes the ability of a given volume of a substance to store internal energy while undergoing a given temperature change, but without undergoing a phase transition. It is different from specific heat capacity in that the VHC is a 'per unit volume' measure of the relationship between thermal energy and temperature of a material, while the specific heat is a 'per unit mass' measure (or occasionally per molar quantity of the material).
This instance has the dimensional units string L^1 M O^1 T^2.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from concentration.
This instance has the dimensional units string dimensionless.
This instance is a narrower concept derived from dynamic_viscosity.
This instance has the dimensional units string L^1 M T^1.
Alternative labels for this instance are: discharge, volumetric_flow_rate, volume_velocity.
This instance has a related Wikipedia page. Short extract:
In physics and engineering, in particular fluid dynamics and hydrometry, the volumetric flow rate (also known as volume flow rate, rate of fluid flow or volume velocity) is the volume of fluid which passes per unit time; usually represented by the symbol Q (sometimes V̇). The SI unit is m3/s (cubic metres per second).
This instance is a narrower concept derived from volume_rate.
This instance quantifies the process flowing.
This instance has the dimensional units string L^3 T^1.
Alternative labels for this instance are: volumetric_flux.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the volumetric flux is the rate of volume flow across a unit area (m3·s−1·m−2).
Volumetric flux = liters/(second*area).
This instance has the dimensional units string L T^1.
This instance has the dimensional units string none.
This instance is a narrower concept derived from kinematic_viscosity.
This instance has the dimensional units string L^2 T^1.
This instance has the dimensional units string L^3 T^1.
This instance is a narrower concept derived from volume_rate.
This instance quantifies the process withdrawal.
This instance has the dimensional units string L^3 T^1.
This instance is a narrower concept derived from thermal_expansion_coefficient.
This instance quantifies the process expansion.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In fluid dynamics, the von Kármán constant (or Kármán's constant), named for Theodore von Kármán, is a dimensionless constant involved in the logarithmic law describing the distribution of the longitudinal velocity in the wallnormal direction of a turbulent fluid flow near a boundary with a noslip condition. The equation for such boundary layer flow profiles is:
u
=
u
⋆
κ
ln
z
z
0
,
{\displaystyle u={\frac {u_{\star }}{\kappa }}\ln {\frac {z}{z_{0}}},}
where u is the mean flow velocity at height z above the boundary.
This instance has the dimensional units string none.
Alternative labels for this instance are: angular_vorticity.
This instance has a related Wikipedia page. Short extract:
In continuum mechanics, the vorticity is a pseudovector field that describes the local spinning motion of a continuum near some point (the tendency of something to rotate), as would be seen by an observer located at that point and traveling along with the flow.
Conceptually, vorticity could be determined by marking parts of a continuum in a small neighborhood of the point in question, and watching their relative displacements as they move along the flow.
This instance has the dimensional units string T^2.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The wave impedance of an electromagnetic wave is the ratio of the transverse components of the electric and magnetic fields (the transverse components being those at right angles to the direction of propagation). For a transverseelectricmagnetic (TEM) plane wave traveling through a homogeneous medium, the wave impedance is everywhere equal to the intrinsic impedance of the medium.
This instance is a narrower concept derived from impedance.
This instance has the dimensional units string L^2 M T^3 I^2.
This instance has a related Wikipedia page. Short extract:
In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.
It is thus the inverse of the spatial frequency.
This instance has the dimensional units string L.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Weber number (We) is a dimensionless number in fluid mechanics that is often useful in analysing fluid flows where there is an interface between two different fluids, especially for multiphase flows with strongly curved surfaces. It is named after Moritz Weber (1871–1951).
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In science and engineering, the weight of an object is related to the amount of force acting on the object, either due to gravity or to a reaction force that holds it in place.Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quantity, the magnitude of the gravitational force.
This instance has the dimensional units string L M T^2.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Weissenberg number (Wi) is a dimensionless number used in the study of viscoelastic flows. It is named after Karl Weissenberg.
This instance has the dimensional units string none.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string T^2.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
In maritime use, the wetted area is the area of the hull (watercraft) which is immersed in water.
In aeronautics, the wetted area is the area which is in contact with the external airflow.
This instance is a narrower concept derived from area.
This instance has the dimensional units string L^2.
This instance has a related Wikipedia page. Short extract:
The wetted perimeter is the perimeter of the cross sectional area that is "wet". The term wetted perimeter is common in civil engineering, environmental engineering, hydrology, geomorphology, and heat transfer applications; it is associated with the hydraulic diameter or hydraulic radius.
This instance is a narrower concept derived from perimeter.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from albedo.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
Length is a measure of distance. In the International System of Quantities, length is any quantity with dimension distance.
This instance has the dimensional units string L.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance is a narrower concept derived from pressure_head.
This instance has the following attributes:
This instance has the dimensional units string L.
This instance is a narrower concept derived from volume_fraction.
This instance has the following attributes:
This instance has the dimensional units string none.
This instance has a related Wikipedia page. Short extract:
The Womersley number (α or
Wo
{\displaystyle {\text{Wo}}}
) is a dimensionless number in biofluid mechanics and biofluid dynamics. It is a dimensionless expression of the pulsatile flow frequency in relation to viscous effects.
This instance has the dimensional units string none.
This instance has the dimensional units string L T^2.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^1.
This instance quantifies the process drifting.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L M T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^1.
This instance quantifies the process drifting.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string T^2.
This instance has the dimensional units string L^2 T^1.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance has the dimensional units string L^1.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string L^1 T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string none.
This instance has the dimensional units string L^1.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 O.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1.
This instance has the dimensional units string L^1 M T^1.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L T^2.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^1.
This instance quantifies the process drifting.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L M T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^1.
This instance quantifies the process drifting.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string T^2.
This instance has the dimensional units string L^2 T^1.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance has the dimensional units string L^1.
This instance has the dimensional units string none.
This instance has the dimensional units string none.
This instance has the dimensional units string L^1 T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string none.
This instance has the dimensional units string L^1.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 O.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
A year is the orbital period of the Earth moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hours of daylight, and, consequently, vegetation and soil fertility.
This instance has the dimensional units string none.
This instance is a narrower concept derived from mass.
This instance has the dimensional units string M.
This instance is a narrower concept derived from mass.
This instance has the dimensional units string M.
This instance has the dimensional units string O.
This instance quantifies the process addition.
This instance has the dimensional units string L^2 M.
This instance quantifies the process decomposition.
This instance has the dimensional units string L^2 M.
This instance quantifies the process precipitation.
This instance has the dimensional units string L.
This instance has a related Wikipedia page. Short extract:
Yield may refer to:
This instance is a narrower concept derived from economic_elasticity.
This instance has the dimensional units string none.
This instance is a narrower concept derived from stress.
This instance has the dimensional units string L^1 M T^2.
Alternative labels for this instance are: elastic_modulus, youngs_modulus.
This instance has a related Wikipedia page. Short extract:
Young's modulus or Young modulus is a mechanical property that measures the stiffness of a solid material. It defines the relationship between stress (force per unit area) and strain (proportional deformation) in a material in the linear elasticity regime of a uniaxial deformation.
This instance is a narrower concept derived from modulus.
This instance has the dimensional units string none.
This instance has the dimensional units string L T^2.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string L M T^1.
This instance has the dimensional units string L T^1.
This instance quantifies the process drifting.
This instance has the dimensional units string L T^1.
This instance has the dimensional units string T^2.
This instance is a narrower concept derived from coordinate.
This instance has the dimensional units string none.
This instance has the dimensional units string L^1.
This instance has the dimensional units string L^1 T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^2 M T^2.
This instance has the dimensional units string L^1 O.
This instance has the dimensional units string L^2 M T^1.
This instance has the dimensional units string L^2 M T^1.
This instance has the dimensional units string M T^2.
This instance has the dimensional units string M T^2.
This instance has the dimensional units string M T^2.
This instance has the dimensional units string L^2 O^1 T^2.
This instance has the dimensional units string L^3 M.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has the dimensional units string L^1 M T^2.
This instance has a related Wikipedia page. Short extract:
The Zel'dovich number is a dimensionless number which provides a quantitative measure for the activation energy of a chemical reaction which appears in the Arrhenius exponent, named after the Russian scientist Yakov Borisovich Zel'dovich, who along with David A. FrankKamenetskii, first introduced in their paper in 1938. In 1983 ICDERS meeting at Poitiers, it was decided to name after Zel'dovich.It is defined as
β
=
E
a
R
T
b
⋅
T
b
−
T
u
T
b
{\displaystyle \beta ={\frac {E_{a}}{RT_{b}}}\cdot {\frac {T_{b}T_{u}}{T_{b}}}}
where
E
a
{\displaystyle E_{a}}
is the activation energy of the reaction
R
{\displaystyle R}
is the universal gas constant
T
b
{\displaystyle T_{b}}
is the burnt gas temperature
T
u
{\displaystyle T_{u}}
is the unburnt mixture temperature.In terms of heat release parameter
α
{\displaystyle \alpha }
, it is given by
β
=
E
a
R
T
b
α
{\displaystyle \beta ={\frac {E_{a}}{RT_{b}}}\alpha }
For typical combustion phenomena, the value for Zel'dovich number lies in the range
β
≈
8
−
20
{\displaystyle \beta \approx 820}
.
This instance has the dimensional units string none.
This instance is a narrower concept derived from angle.
This instance has the dimensional units string none.