Name
Symbol
Derivation
Value
Unit
Info
1
characteristic impedence of vacuum
Z0
m0c
376.730313461
W
-
2
electric constant (permittivity of free space)
e0
1/m0c2
8.854187817... x 10-12
Fm-1
3
magnetic constant (permeability of free space)
m0
4p x 10-7
NA-2
4
Newtonian constant of gravitation
G
6.673(10) x 10-11
m3kg-1s-2
5
Planck constant
ħ
h/2p
1.054571596(82) x 10-34
Js
6
h
6.62606876(52) x 10-34
7
Planck length
lp
(ħG/c3)1/2
1.6160(12) x 10-35
m
8
Planck mass
mp
(ħc/G)1/2
2.1767(16) x 10-8
kg
9
Planck time
tp
(ħG/c5)1/2
5.3906(40) x 10-44
s
10
speed of light in vacuum
c
299792458
ms-1
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