Fundamental Electronic Charge e = 1.60218 x 10-19 C
Electron Rest Mass m0 = 9.1095 x 10-31 kg
Atomic Mass Unit = 1.6606 x 10-27 kg
Bohr Radius of Hydrogen in Vacuum = 0.0529 nm
Vacuum Permittivity Epsilon0
= 8.85418 x 10-12 F.m-1 Speed of Light in Vacuum c0
= 2.99792 x 108 m.s-1
Planck's Constant h = 6.62617 x 10-34 J.s
Wavelength of a 1 eV photon = 1.23977 x 10-6 m
1 cm -1 = 0.12408 meV
1 meV = 8.0593 cm -1
Boltzmann's Constant kB
= 8.6174 x 10-5 eV.K-1
= 1.38066 x 10-23 Joules.K-1 Avogadro's Constant NA
= 6.022 x 1026 (kgMole)-1 Electron Volt eV = 1.60218 x 10-19 J