Article | REF: B4110 V1

Very low-pressure gas - Formulas and tables

Author: Guy ROMMEL

Publication date: August 10, 1985

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3. Useful constants

Electron mass: m = 9.107 × 10 –31 kg.

Electron charge: e = 1.602 1 × 10 –19 C.

Stefan-Boltzmann constant: σ = 5.669 × 10 –12 W/cm 2 · K 4 .

Boltzmann constant: k = 1.381 × 10 –23 J/ K.

Ratio of proton mass to electron mass: 1,836.

Energy associated with 1eV: E = 1.602 × 10 –19 J = 23.06 Kcal.

Speed of the 1ev electron: v 0 = 5.931 × 10 5 ...

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Useful constants