MEASUREMENT

UNIT

SYMBOL

dimensions

Absorbed dose

gray

Gy

J.kg^-1

Acceleration, a

m.s^-2

Activity (radioactivity)

becquerel

Bq

s^-1

Angular displacement, q

radian

rad

Angular acceleration, a

rad.s^-2

Angular momentum, L

kg.m².s^-1 or N.m.s

Angular velocity, angular frequency, w

rad.s^-1

Area

m²

Capacitance, C

farad

F

A.s.V^-1

Conductance

Conductivity, g

resistivity, r

siemens

S

A.V^-1 or W ^-1

S.m^-1

W .m

Density (mass), r

Kg.m^-3

Electrical charge, Q, q or e

coulomb

C

A.s

Electric field strength, E

V.m^-1 or N.C^-1

Electric flux, f _E

V.m

Electrical potential, potential difference, V, electromotive force (emf), e

volt

V

J.C

Electrical resistance, R or r

Reactance, X

impedance, Z

ohm

W

V.A^-1

Energy, work, heat

joule

J

Kg.m².s^-2

Entropy, S

J.K^-1

Equivalent dose

sievert

Sv

J.kg^-1

Exposure (radiation)

C.kg^-1

Force, F, N, T, f, ...

newton

N

Kg.m.s^-2

Frequency, f

hertz

Hz

s^-1

Heat capacity

Specific heat capacity, c

molar heat capacity, C

J.K^-1

J.kg^-1.K^-1

J.mol^-1.K^-1

Latent heat, L

J.kg^-1

Luminance

Luminous flux

Illuminance (illumination)

lumen

lux

Lm

Lx

Cd.m^-2

cd.sr

lm.m^-2

Inductance, L

henry

H

V.s.A^-1

Magnetic field strength, H

A.m^-1

Magnetic flux, f _M

weber

Wb

V.s

Magnetic flux density, B

tesla

T

N.A^-1.m^-1

Molar mass, M

Molarity

concentration

Kg.mol^-1

mol.kg^-1

mol.m^-3

Moment of inertia (rotational inertia), I

kg.m²

Momentum, p

Impulse, J

N.s or kg.m.s^-1

Permittivity, e

F.m^-1

Permeabiltiy, m

H.m^-1

Power, P

watt

W

J.s^-1

Pressure, stress, P

Moduli of elasticity (Young's, Bulk)

pascal

Pa

N.m^-2

Specific heat capacity, c

J.kg^-1.K^-1

Spring constant, k

N.m^-1

Surface tension, g

N.m^-1

Torque (moment of force), t

N.m

Thermal conductivity, k

W.m^-1.K^-1

Velocity, speed, v

m.s^-1

Viscosity, h

Pa.s

Volume, V

m³