Useful Constants: |
Symbol |
Value |
Units |
|
Atomic Mass |
|
= 1.66054E-27 |
Kg |
|
Avogadro constant |
No |
= 6.0225 E23 |
1/mol |
|
Bohr Radius |
ao |
= 5.29177E-11 |
m |
|
Boltzmann constant |
k = R/No |
= 1.381 E-23 |
J/K |
|
= 8.6173E-5 |
ev / K |
|||
= 2.08366 |
1 / K s |
|||
Dirac’s constant |
|
= 1.05457E-34 |
J s |
|
= 6.58212E-16 |
ev s |
|||
Earth |
Dist. From Moon |
|
= 3.844E8 |
m |
Magnetic Field |
Bo |
= 1.8E-5 |
T |
|
Mass |
|
= 5.972E24 |
Kg |
|
Radius |
|
= 6.37E6 |
m |
|
Electron |
Charge |
e |
= 1.6021 E-19 |
C |
= 2.418E-14 |
A / J |
|||
Mass |
me |
= 9.1094E-31 |
Kg |
|
Radius |
re |
= 2.8179E-15 |
m |
|
Electric Permittivity |
eo = 1/moco2 |
= 8.85419 E-12 |
F / m |
|
Faraday constant |
F = Noe |
= 96,487 |
C / mol |
|
Fermi’s constant |
|
= 1.4E-50 |
J / m3 |
|
Gas constant |
R |
= 0.08206 |
liter atm / mol K |
|
= 0.08314 |
liter bar mol K |
|||
= 0.7302 |
ft3 atm / lbmol R |
|||
= 1.986 |
Btu / lbmol R |
|||
= 1.987 |
cal / mol K |
|||
= 8.314 |
J / mol K |
|||
= 10.73 |
ft3 psia / lbmol R |
|||
= 82.06 |
cm3 atm / mol K |
|||
= 1545 |
ft lbf / lbmol R |
|||
Gravity Acceleration |
g |
= 9.80665 |
m / s2 |
|
= 32.1740 |
ft / s2 |
|||
Light |
Speed |
co |
= 2.99793 E8 |
m/s |
Year |
|
= 9.46053E15 |
m |
|
Magnetic Permeability |
mo |
= 4p E-7 |
H / m, N / A2 |
|
Neutron Mass |
mn |
= 1.67493E-27 |
Kg |
|
Planck constant |
h |
= 6.6256 E-34 |
J s |
|
= 4.13567E-15 |
ev s |
|||
Proton Mass |
mp |
= 1.67262158E-27 |
Kg |
|
Stefan-Boltzman constant |
s |
= 5.6704E-8 |
Wm-2K-4 |
|
Sun |
Radius |
|
= 6.96E8 |
m |
Solar constant |
|
= 1400 |
W / m2 |