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Friday, 13 November 2015

List of Measurements and Their Unit

  By GK Planet Team       Friday, 13 November 2015
Base Quantities

Base quantity
Symbol
SI unit
Symbol/ dimension
Length
l
metre (m)
L
Mass
m
kilogram (kg)
M
Time
t
second (s)
T
Electric current
I
ampere (A)
I
Temperature
T
kelvin (K)
Θ
Amount of substance
n
mole (mol)
N
Luminous intensity
L
candela (cd)
J

Derived Quantities
Derived quantity
Symbol
SI units
Dimension
Plane angle
θ
radian (rad)
1
Solid angle
Ω
steradian (sr)
1
Absorbed dose rate
Gy s−1
L2 T−3
Acceleration
a→
m s−2
L T−2
Angular acceleration
α
rad s−2
T−2
Angular speed (orangular velocity)
ω
rad s−1
T−1
Angular momentum
L
kg m2 s−1
M L2 T−1
Area
A
m2
L2
Area density
ρA
kg m−2
M L−2
Capacitance
C
farad (F = A2 s4 kg−1m−2)
I2 T4 M−1 L−2
Catalytic activity
katal (kat = mol s−1)
N T−1
Catalytic activity concentration
kat m−3
N L−3 T−1
Chemical potential
μ
J mol−1
M L2 T−2 N−1
Molar concentration
C
mol m−3
N L−3
Crackle
c→
m s-5
L T-5
Current density
J →
A m−2
I L−2
Dose equivalent
H
sievert (Sv = m2 s−2)
L2 T−2
Dynamic Viscosity
η
Pa s
M L−1 T−1
Electric Charge
Q
coulomb (C = A s)
I T
Electric charge density
ρQ
C m−3
I T L−3
Electric displacement
D
C m−2
I T L−2
Electric field strength
E→
V m−1
M L T−3 I−1
Electrical conductance
G
siemens (S = A2 s3 kg−1 m−2)
L−2 M−1 T3 I2
Electric potential
V
volt (V = kg m2 A−1 s−3)
L2 M T−3 I−1
Electrical resistance
R
ohm (Ω = kg m2 A−2 s−3)
L2 M T−3 I−2
Energy
E
joule (J = kg m2 s−2)
M L2 T−2
Energy density
ρE
J m−3
M L−1 T−2
Entropy
S
J K−1
M L2 T−2 Θ−1
Force
F→
newton (N = kg m s−2)
M L T−2
Fuel efficiency
mpg
fuel efficiency (mpg = m m−3
M M−3
Impulse
p→
kg m s−1
M L T−1
Frequency
f
hertz (Hz =s−1)
T−1
Half-life
t1/2
s
T
Heat
Q
J
M L2 T−2
Heat capacity
Cp
J K−1
M L2 T−2 Θ−1
Heat flux density
ϕQ
W m−2
M T−3
Illuminance
Ev
lux (lx = cd sr m−2)
J L−2
Impedance
Z
ohm (Ω = kg m2 A−2 s−3)
L2 M T−3 I−2
Index of refraction
n
1
Inductance
L
henry (H = kg m2 A−2s−2)
M L2 T−2 I−2
Irradiance
E
W m−2
M T−2
Intensity
I
W m−2
M T−2#
Jerk
j→
m s-3
L T-3
Jounce
s→
m s-4
L T-4
Linear density
ρl
M L−1
Luminous flux (orluminous power)
F
lumen (lm = cd sr)
J
Mach Number (ormach)
M
Unitless (M = u/c)
1
Magnetic field strength
H
A m−1
I L−1
Magnetic flux
Φ
weber (Wb = kg m2 A−1 s−2)
M L2 T−2 I−1
Magnetic flux density
B
tesla (T = kg A−1 s−2)
M T−2 I−1
Magnetization
M
A m−1
I L−1
Mass fraction
x
kg/kg
1
(Mass) Density(volume density)
ρ
kg m−3
M L−3
Mean lifetime
τ
s
T
Molar energy
J mol−1
M L2 T−2 N−1
Molar entropy
J K−1 mol−1
M L2 T−2 Θ−1 N−1
Molar heat capacity
c
J K−1 mol−1
M L2 T−2 N−1
Moment of inertia
I
kg m2
M L2
Momentum
p→
N s
M L T−1
Permeability
μ
H m−1
M L T−2 I−2
Permittivity
ε
F m−1
I2 M−1 L−3 T4
Power
P
watt (W)
M L2 T−3
Pressure
p
pascal (Pa = kg m−1 s−2)
M L−1 T−2
Pop
p→
m s-6
L T-6
(Radioactive) Activity
A
becquerel (Bq = s−1)
T−1
(Radioactive) Dose
D
gray (unit) (Gy = m2 s−2)
L2 T−2
Radiance
L
W m−2 sr−1
M T−3
Radiant intensity
I
W sr−1
M L2 T−3
Reaction rate
r
mol m−3 s−1
N L−3 T−1
Speed
v
m s−1
L T−1
Specific energy
J kg−1
L2 T−2
Specific heat capacity
c
J kg−1 K−1
L2 T−2 Θ−1
Specific volume
v
m3 kg−1
L3 M−1
Spin
S
kg m2 s−1
M L2 T−1
Strain
Unitless
Dimensionless
Stress
σ
Pa
M L−1 T−2
Surface tension
γ
N m−1 or J m−2
M T−2
Thermal conductivity
k
W m−1 K−1
M L T−3 Θ−1
Torque
τ
N m
M L2 T−2
Velocity
v→
m s−1
L T−1
Volume
V
m3
L3
Wavelength
λ
m
L
Wavenumber
k
m−1
L−1
Weight
w
newton (N = kg m s−2)
M L T−2
Work
W
joule (J = kg m2 s−2)
M L2 T−2
Young's modulus
pascal (Pa = kg m−1 s−2)
M L−1 T−2




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