physical quantity
quantitative characterization of an aspect of a physical entity, phenomenon, event, process, transformation, relation, system, or substance
apparent power
product of RMS voltage and RMS current in an AC electrical system
molar conductivity
conductivity per molar concentration of electrolyte
reactive power
type of electrical power
specific modulus
material property giving the ratio of stiffness to mass density for a material
permeance
the degree to which a material admits a flow of matter or energy
indicated airspeed
airspeed read directly from the airspeed indicator (ASI) on an aircraft
vector quantity
physical quantity that is a vector
angular displacement
displacement measured angle-wise when a body is showing circular or rotational motion
thermal diffusivity
physical quantity that measures the rate of transfer of heat of a material from the hot side to the cold side
mean radiant temperature
type of temperature
continuous spectrum
physical quantities taking on a continuum of values
force density
force per volume
amount of precipitation
physical quantity measured in mm
electrical conductivity
physical quantity and property of material describing how readily a given material allows the flow of electric current
chromaticity
objective specification of the quality of a color regardless of its luminance. A combination of hue and saturation.
effective atomic number
approximate atomic number calculated for materials with many elements
energy current
flow of energy defined by the Poynting vector (E×H), analogous to electric current (flow of electric charge)
milk equivalent
measure of milk used in a product
shear strain
quotient of the parallel displacement of two (imaginary) surfaces and the distance of the surfaces
shearing
physics
ion dose
quotient of the sum of electric charges on all ions produced in air and the mass of the air
dynamic viscosity
physical property of a moving fluid
thermal conductance
objects' ability to transfer heat; reciprocal of thermal resistance
standard atomic weight
relative atomic mass, in samples by standard, as published by IUPAC (CIAAW)
complex power
quantity in electromagnetism
permeance
inverse of the magnetic reluctance
photon intensity
density of the photon flux with respect to solid angle
photon irradiance
area density of the incident photon flux
magnetic potential
physical quantity that describes magnetic fields
rotational acceleration
rate of change of rotational velocity
area
quantity that expresses the extent of a two-dimensional surface or shape, or planar lamina, in the plane
electric potential
line integral of the electric field
transmission coefficient
coefficient describing the amplitude, intensity, or total power of a transmitted wave relative to an incident wave
atmospheric pressure
static pressure exerted by the weight of the atmosphere
amplitude
physical quantity; (of a periodic variable) measure of its change over a single period (such as time or spatial period)
capacitance
ability of a body to store electrical charge
solubility
capacity of a solid, liquid, or gaseous substance to dissolve in a solvent
refractive index
ratio of the speed of light in vacuum to that in the medium
magnetic flux
surface integral of the magnetic flux density
scalar quantity
quantity represented by a scalar: quantity having no direction
mechanical energy
potential and kinetic energy associated with the position and movement of a physical object
displacement
vector that is the shortest distance from the initial to the final position of a point P
osmotic pressure
measure of the tendency of a solution to take in pure solvent by osmosis
bit rate
information transmission rate expressed in bits per second
admittance
reciprocal of the complex impedance