Physical Constants

From CASA Guides
Jump to: navigation, search
pi 3.14.. 3.14159
ee 2.71.. 2.71828
c light vel. 2.99792e+08 m/s
G grav. const 6.67259e-11 N.m2/kg2
h Planck const 6.62608e-34 J.s
HI HI line 1420.41 MHz
R gas const 8.31451 J/K/mol
NA Avogadro # 6.02214e+23 mol-1
e electron charge 1.60218e-19 C
mp proton mass 1.67262e-27 kg
mp_me mp/me 1836.15
mu0 permeability vac. 1.25664e-06 H/m
eps0 permittivity vac. 1.60218e-19 C
k Boltzmann const 1.38066e-23 J/K
F Faraday const 96485.3 C/mol
me electron mass 9.10939e-31 kg
re electron radius 2.8179e-15 m
a0 Bohr’s radius 5.2918e-11 m
R0 solar radius 6.9599e+08 m
k2 IAU grav. const^2 0.000295912 AU3/d2/S0