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  Physical Constants
SECTION 1
Fundamental
EPN
part 3
part 4

SECTION 2
part 1
part 2
part 3

SECTION 3
part 1
part 2
part 3
part 4
part 5

SECTION 4
part 1
part 2
part 3
part 4
part 5

part 6

 
   Fundamental Physical Constants


Atomic mass unit [u] 1.66054 x 10-27 kg
931.434 MeV/c2
Avogadro's number [NA] 6.02213 x 1023(g mol)-1
Bohr magneton [uB] 9.27401 x 10-24 J/T
Bohr radius [ao] 0.529177 x 10-10 m
Boltzmann's constant [k] 1.3806 x 10-23 J/K
Compton wavelength 2.426310 x 10-12 m
Deuteron mass [md] 3.34358 x 10-27 kg
2.0135532 u
Electron mass [me] 9.10938 x 10-31 kg
5.485799 x 10-4 u
0.510999 MeV/c2
Electron-volt [eV] 1.602177 x 10-19 J
Elementary charge [e] 1.602177 x 10-19 C
Gas constant [R] 8.3145 J/K mol
Gravitational const. [G] 6.672 x 10-11 Nm2/kg2
Hydrogen ground state 13.6057 eV
Neutron mass [mn] 1.67492 x 10-27 kg
1.0086649 u
939.565 MeV/c2
Nuclear magneton [un] 5.05078 x 10-27 J/T
Permeability of free space [uo] 4pi x 10-7 N/A2
Permittivity of free space [Eo] 8.854187 x 10-12 C2/N m2
Planck's constant [h] 6.626 x 10-34 J s
h = 2 pi hbar
Proton mass [mp] 1.6726 x 10-27 kg
1.0072764 u
938.27 MeV/c2
Rydberg constant [RH] 1.097373 x 107 m-1
Speed of light in vacuum [c] 2.99792458 108 m/s


   Electron, Proton and Neutron Properties


Electron Proton Neutron
Rest
mass
[kg]
9.1093897x10-31 1.6726231x10-27 1.6749286x10-27
Molar
mass
[kg/mol]
5.4857990x10-7 1.0072765x10-3 1.0086649x10-3
Charge
[C]

-1.602177x10-19 +1.602177x10-19 0.0
Specific
Charge
[C/kg]
-1.7588196x1011 9.5788309x107 0.0
Radius
[m]

less than 10-16 8x10-16 8x10-16
Spin
quantum
number
1/2 1/2 1/2
Magnetic
moment
[J/T]
928.477x10-26 1.41061x10-26 0.966237x10-26
Compton
wavelength
[m]
2.42631x10-12 1.32141x10-15 1.31959x10-15
Quark
composition

- uud ddu


 


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Last modified: November 17, 2000