# Universal Constants

### - table or chart of universal physical constants including symbol, value and units for values such as speed of light, permittivity, etc

The universal constants are physical constants that are widely used in science.

The physical constants that come under the universal constants heading include items such as the speed of light, permeability of a vacuum, permittivity of a vacuum, Planck's constant and the Newtonian constant of gravity.

Details for these universal constants and more are given below. The constant name, symbol, value, units and the relative uncertainty are provided.

Constant name Symbol of constant Value Units Relative Uncertainty
Speed of light in vacuum
c
299 792 458
m/s

Permeability in a vacuum
µ0
4π x 10^-7
= 12.566 370 614
N ⋅ A^-2

Permittivity in a vacuum
ε0
1/(µ0 ⋅ c^2)
8.854 187 817
10^-12 F &sdot m^-1

Newtonian constant of gravitation
G
6.672 59
10^-11 m^3 kg^-1 s^-1
128
Planck constant
h
6.626 0755
10^-34J⋅ s
0.60
Planck's constant
in electron volts
h/{e}
4.135 6692
10^-15 eV s
0.30
h/2π

1.054 572 66
10^-34 J s
0.60
h/2π in electron volts

6 582 1220
10^-16 eV s
0.30
Planck mass
mp
2.176 71
10^-8 kg
64
Planck length
lp
1.616 05
10^-35m
64
Planck time
tp
5.390 56
10^-44s
64

<< Previous   |   Next >>

### Other popular tutorials

Jeff Hastings | BrightSign LLC
Fans in Digital Signage Players Are a Lose/Lose Proposition
Jeff Hastings of BrightSign has some interesting ideas on why fans should not be used in digital signage, and how to avoid using them.
Online - Designing GaN Power Amplifier MMICs
Learn how to design high performance GaN power amplifier MMICs

More training courses

##### Channels
Radio-Electronics.com is operated and owned by Adrio Communications Ltd and edited by Ian Poole. All information is © Adrio Communications Ltd and may not be copied except for individual personal use. This includes copying material in whatever form into website pages. While every effort is made to ensure the accuracy of the information on Radio-Electronics.com, no liability is accepted for any consequences of using it. This site uses cookies. By using this site, these terms including the use of cookies are accepted. More explanation can be found in our Privacy Policy