Symbols for Physical Quantities - Physics

the branch of science concerned with the nature and properties of matter and energy. The subject matter of physics includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms.

1. Symbols for Physical Quantities - Physics
Page 1
Physics
Symbols for Physical Quantities
Name of Quantity Symbol
absolute temperature T
absorptance α
acceleration a
Activity A
admittance Y
amount of substance n
ampere turn At
angstrom Å
angular acceleration a
angular displacement θ
angular frequency ω
angular magnification M
angular momentum ω
atomic mass unit u
Avogadro constant N
becquerel Bq
Boltzmann constant k
Brewster angle
bulk modulus K
calorie cal
Capacitance C
centripetal acceleration a
centripetal force F
characteristic temperature θ
charge Q
charge density ρ
coefficient of friction μ
concentration c
conductivity, electrical σ
conductivity, thermal λ
coefficient of viscosity η
cubic expansion coefficient y
current
current density j
debye length D
decay constant λ
decibel dB
declination θ
degeneracy of an energy level g
density ρ
diameter d
diffusion coefficient D
displacement s
efficiency η
electric charge Q
electric displacement D
electric field strength E
 i
 i

2. Symbols for Physical Quantities - Physics
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electric flux Ѱ
electric potential V
electrochemical equivalent Z
electromotive force E
electron volt eV
emissivity s
energy W
enthalpy H
entropy S
existance M
Faraday constant F
foot ft
force F
frequency f; v
gas constant R
Gibbs function G
gram g
gravitational constant G
Half-life
heat Q
height h
Helmholtz function F
horizontal intensity B
horse power hp
illumination E
impedance Z
inclination φ
internal energy U
ionization potential I
irradiance E
Joule’s equivalent J
Kilowatt-hour kWh
kinematic viscosity v
kinetic energy T
Light-year ly
litre l
luminance
luminous flux
luminous intensity
magnetic field strength H
magnetic flux φ
magnetic flux density B
magnetic moment M
magnetomotive force F
magnification m
mass m
Maxwell Mx
mean free path λ
mean life
molar thermal capacity
moment of inertia I
momentum, linear p
 T
1/2
L
v
φ
v
l
v
T
av
C
m

3. Symbols for Physical Quantities - Physics
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multiplication factor k
Neel temperature θ
Neper Np
neutron number N
nit nt
nucleon number A
oersted Oe
optical path d
p
Parsec pc
period T
permeability μ
permittivity ε
photon p
planck constant h
poise P
poisson ratio v
potential difference V
potential energy V
poundal pdl
power P
poynting vector S
pressure P
proton number Z
radiance Le
radiant flux Ωe
radiant intensity le
radioactivity A
radius r
radius of curvature r
radius of gyration k
reactance X
reflectance ρ
refractive constant n
relative atomic mass
relative density d
relative molecular mass
relative permittivity
reluctance R
resistance R
resistivity ρ
coefficient of restitution e
coefficient of rest mass Mo
Reynolds number Re
roentgen R
shear modulus or coefficient of rigidity η
solid angle Ω
specific rotatory power
speed of light c
Stokes St
surface tension σ
susceptibility k
A
r
M
r
 
∈
r
a
m

4. Symbols for Physical Quantities - Physics
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Temperature T,t
thermal capacity C
thermodynamic temperature T
time t
tonne t
torque T
velocity v
voltage V
volume V
wavelength λ
wave number ṽ
weight W
work W
Young modulus Y