Page 686 - SUBSEC October 2017_Neat

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LIST OF PHYSICAL CONSTANTS

Speed of light in free space c = 3.00 × 10 m s -1
8
Permeability of free space µ 0 = 4π × 10 H m -1
–7

Permittivity of free space ε = 8.85 × 10 F m -1
–12
0
1
4πε 0 = 9.0 × 10 m F -1
9

Elementary charge e = 1.60 × 10 C
–19
Planck’s constant h = 6.63 × 10 J s
–34
Unified atomic mass constant u = 1.66 × 10 –27 kg (931 MeV)

Rest mass of electron m = 9.11 × 10 kg
-31
e
Rest mass of proton m = 1.67 × 10 kg
–27
p
Acceleration due to gravity g = 9.81 m s -2

1 Atmosphere atm = 1.00 × 10 N m -2
5

Avogadro’s number N = 6.02 × 10 per mole
23
A

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02238010/SPEC 2017