physical quantity
quantitative characterization of an aspect of a physical entity, phenomenon, event, process, transformation, relation, system, or substance
dissipation factor
ratio of dissipated to incident power
radiant intensity
physical quantity
logarithmic decrement
measure for the damping of an oscillator
propagation coefficient
complex measure of the attenuation (real part) and phase angle (imaginary part) along the path travelled by a plane wave
gravitational binding energy
minimum energy to remove a system from a gravitationally bound state
surface density
the density of a two-dimensional object, or of the surface of a three-dimensional object, calculated as the mass per area
sound exposure
time integral over the squared sound pressure
radiation dose
effect of ionizing radiation in matter
parachor
physical quantity related to surface tension
molar heat capacity
intensive quantity, heat capacity per amount of substance
ship measurement
term or definition relating to measuring a ship's characteristics
Massieu function
negative quotient of Helmholtz energy and temperature
resonance escape probability
probability that a high-energy neutron is not captured
absorption cross section
Mmeasures the probability of an absorption process
ionic conductivity
a measure of a substance's tendency towards ionic conduction
miles per gallon gasoline equivalent
measure of average distance traveled per unit of energy consumed
oxygen permeability
ability of a contact lens to allow oxygen to reach the eye
molar absorption coefficient
product of the linear absorption coefficient and the molar volume
power efficiency
dimensionless physical quantity; ratio of output power to input power
variance inflation factor
measure of collinearity in statistical regression models
radiant energy density
physical quantity
Specific potential energy
property in physics
kinetic chain length
average number of monomer units which are added to an increasing chain during polymerization
electric potential (electrodynamics)
time component of the four-dimensional electromagnetic potential
pop
sixth derivative of the position vector with respect to time; rate of change of the crackle (fifth derivative) with respect to time
particle concentration
particles of a given species per volume
proper distance
distance between two events, measured in an inertial reference frame where both events are simultaneous
molar entropy
entropy per amount of substance
specific entropy
entropy per mass
angular impulse
time integral of the moment of force
cubic expansion coefficient
relative change of volume per change of temperature
linear density of electric charge
physical quantity
electric potential difference
line integral over the sum of electric field strength and the time derivative of the magnetic vector potential
latitude
angle between zenith and a plane parallel to the equator
diameter
straight line segment that passes through the center of a circle
kinetic energy
energy of a moving physical body
mass number
number of heavy particles in the atomic nucleus
potential energy
energy held by an object because of its position relative to other objects or stresses within itself, rather than its velocity
angular momentum
measure of the extent to which an object will continue to rotate in the absence of an applied torque
age of a person
time elapsed since a person was born
interval
physical quantity; ratio between two sonic frequencies, often measured in cents, a unit derived from the logarithm of the frequency ratio
position vector
vector representing the position of a point with respect to a given origin and axes
water hardness
degree of mineralisation (content of multivalent cations) of water
flange focal distance
property of a lens mount system
mean anomaly
one of the orbital elements used to specify the orbit of an object in space