physical quantity
quantitative characterization of an aspect of a physical entity, phenomenon, event, process, transformation, relation, system, or substance
specific enthalpy
enthalpy per mass
relative molecular mass
ratio of the molecular mass and the unified atomic mass unit
enzyme activity
physical property of an enzyme, measured in katal = 1 mol / s, or enzyme unit (U) = 1 μmol / min
rotational velocity
physical quantity defined as the rate of change of number of rotations whose direction is the axis of rotation
Michaelis constant
property to characterize the kinetics of Michaelis–Menten reactions
rotation
physical quantity; number of revolutions of a rotating body or turns in a coil
magnetic tension
line integral of the magnetic field strength between two points
conductance for alternating current
real part of the complex admittance
particle fluence
number of the radiation particles crossing an area
photon flux
number of photons per time
molar enthalpy
enthalpy per amount of substance
total angular momentum
in a quantum system, vector sum of angular momentum and spin
mass percentage
percentage of one substance's mass to the mass of the total mixture
apparent impedance
quotient of the RMS values of voltage and electric current
velocity
rate of change of the position of an object as a function of time, and the direction of that change
gravitational acceleration
acceleration of an object caused by gravity
pressure
force applied over an area
work
energy transferred to an object via the application of force on it through a displacement
specific impulse
how efficiently a reaction mass engine creates thrust, which is often proportional to effective exhaust gas velocity
electrical resistivity
physical quantity and property of material; inverse of the electric conductivity
baryon number
one third of the difference between the number of quarks and antiquarks in a system
moment of inertia
scalar measure of the rotational inertia with respect to a fixed axis of rotation
inductance
property of electrical conductors to oppose changes in current flow
heat capacity
thermal property describing the energy required to change a material's temperature
electromotive force
scalar physical quantity homogeneous to a voltage, expressing the modulus of the force exerted on a charge in an electric field
angular acceleration
rate of change of angular velocity
zenithal hourly rate
number of meteors a single observer would see in an hour of peak activity for the meteor shower
exposure
amount of light captured by a camera
exhaust gas mass flow
flow of exhaust gases per unit time
dielectric strength
degree of insulation
sound energy
volume integral of the sound energy density
membrane potential
type of physical quantity
cloud point
temperature below which a transparent solution becomes non-transparent
jerk
rate of change of acceleration
charge density
electric charge per volume, length or area
crackle
fifth derivative of the displacement; fourth derivative of velocity
gamma
parameter of an eclipse that describes how centrally the shadow of the Moon or Earth strikes the other
irradiance
areal density of incoming radiant flux
displacement current
electromagnetism
magnetization
physical quantity, density of magnetic moment per volume
polarizability
tendency of matter subjected to an electric field to acquire an electric dipole moment
emissivity
effectiveness of an object in emitting thermal radiation
specific strength
material's strength (force per unit area at failure) divided by its density
volume fraction
dimensionless quantity
resistance to alternating current
real part of the complex impedance
CPU time
amount of time for which a central processing unit (CPU) was used for processing instructions of a computer program or operating system, as opposed to, for example, waiting for input/output (I/O) operations or entering low-power (idle) mode
electron temperature
temperature of a Maxwell–Boltzmann distribution exhibited by the velocities of a group of electrons