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Quantum Constants
Constants to Memorize
Question | Answer |
---|---|
α | e²/(ħc) = 1/137 |
ħc | 197.3 MeV*fm = 2x10⁻⁵ eV*cm |
electron mass | 0.911x10⁻²⁷ g = 0.511 MeV/c² |
Bohr Radius aₒ | ħ²/(me²) = 5.292x10⁻⁹ cm = 0.529 Å |
Compton Wavelength of an Electron | ħ/(mc) = 3.862x10⁻¹¹ cm |
1 Ry | me⁴/(2ħ²) = α²mc²/2 = 13.6 eV |
Bohr magneton | eħ/(2mc) = 9.274x10⁻²¹ erg/Gs |
G | 6.67x10⁻⁸ cm³/(g*s²) |
abs(μₒB) | 0.6x10⁻⁸ eV (B/1Gauss) |