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universal constants

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

Planck constant

h

-

6.62606876(52) x 10-34

Js

-

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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