Quantity |
Symbol |
Value (cgs units) |
Value (eV units) |
speed of light (in vacuum) |
c |
2.99792458 × 1010 cm s-1 |
|
Newton's gravitational constant |
G |
6.6743 × 10-8 cm3 g-1 s-2 |
|
Planck's constant |
h |
6.6261 × 10-27 cm2 g s-1 |
4.1357 × 10-15 eV s |
reduced Planck's constant |
ℏ = h/2π |
1.0546 × 10-27 cm2 g s-1 |
6.5821 × 10-16 eV s |
Boltzmann's constant |
k |
1.3807 × 10-16 cm2 g s-2 K-1 |
8.6173 × 10-5 eV K-1 |
Stefan-Boltzmann constant |
σ |
5.6704 × 10-5 g s-3 K-4 |
|
electron charge |
e |
4.8032 × 10-10 cm3/2 g1/2 s-1 |
|
electron mass |
me |
9.1094 × 10-28 g |
0.511 MeV/c2 |
proton mass |
mp |
1.6726× 10-24 g |
938.272 MeV/c2 |
neutron mass |
mn |
1.6749× 10-24 g |
939.563 MeV/c2 |
atomic mass unit |
u |
1.6605 × 10-24 g |
931.494 MeV/c2 |
erg (unit of energy) |
erg |
1 cm2 g s-2 |
6.2415 × 1011 eV |
Quantity |
Symbol |
Value (cgs units) |
Solar mass |
M☉
|
1.9884 × 1033 g |
Earth mass |
M⊕ |
5.9722 × 1027 g |
Jupiter mass |
MJ |
1.8981 × 1030 g |
Solar radius |
R☉ |
6.957 × 1010 cm |
Earth radius |
R⊕ |
6.3781 × 108 cm |
Jupiter radius |
RJ |
7.1492 × 109 cm |
Solar luminosity |
L☉ |
3.828 × 1033 erg s-1 |
astronomical unit |
AU |
1.496 × 1013 cm |
parsec |
pc |
3.086 × 1018 cm |
light-year |
ly |
9.461 × 1017 cm |
year |
yr |
3.156 × 107 s |
Return to Physics 514 homepage
Last updated: January 7, 2024 swj