scalar quantity
quantity represented by a scalar: quantity having no direction
normal stress
force component perpendicular to a surface element divided by the area of that surface element
electromagnetic energy density
physical quantity
active energy
integral of the electric instantaneous power over a time interval
mass
property of matter to resist changes of the state of motion and to attract other bodies
luminous intensity
luminous flux per solid angle in a given direction
distance
length of straight line that connects two points in a measurable space or in an observable physical space
impedance
quotient of the voltage phasor and the electric current phasor
number of particles
number of particles in a system
thermal conductivity
capacity of a material to conduct heat
rotational speed
physical quantity
mass flow rate
mass per time of a fluid passing through a cross section
active power
average power of an alternating electric current
electric charge density
electric charge per volume
electric charge
physical property that quantifies an object's interaction with electric fields
time
dimension in which events can be ordered from the past through the present into the future
electrical resistance
opposition to the passage of an electric current
length
measured dimension of an object in a physical space
volume
quantity of three-dimensional space
entropy
physical property of the state of a system, measure of disorder
unit of measurement
real scalar quantity, defined and adopted by convention, with which any other quantity of the same kind can be compared to express the ratio of the two quantities as a number (VIM)
illuminance
luminous flux incident on a surface per area
thermodynamic temperature
absolute measure of temperature
angular frequency
rate of change of the phase angle
apparent power
product of RMS voltage and RMS current in an AC electrical system
reactive power
type of electrical power
permeance
inverse of the magnetic reluctance
speed of light in vacuum
speed of electromagnetic waves in vacuum
area
quantity that expresses the extent of a two-dimensional surface or shape, or planar lamina, in the plane
torque
tendency of a force to rotate an object
electric potential
line integral of the electric field
capacitance
ability of a body to store electrical charge
magnetic flux
surface integral of the magnetic flux density
bending moment of force
moment that results in the bending of a structural element
gravitational potential
scalar potential that describes a gravitational field
duration
physical quantity for describing the temporal distance between events
surface density of electric charge
electric charge per area
magnetic scalar potential
scalar potential whose negative gradient is the magnetic field strength
loss angle
arcus tangent of the electric loss factor
phase difference
for two sinusoidal quantities, difference in their initial phase modulo 2 π
self-inductance
diagonal term of the mutual inductance matrix