Physical Constants Table
The main physical constants: speed of light, electron charge, Avogadro constant and others.
| Quantity | Symbol | Value |
|---|---|---|
| Acceleration of gravity | g | 9.81 m/s² |
| Gravitational constant | G | 6.674·10−11 N·m²/kg² |
| Speed of light in vacuum | c | 2.998·108 m/s |
| Planck constant | h | 6.626·10−34 J·s |
| Elementary charge | e | 1.602·10−19 C |
| Electron mass | me | 9.109·10−31 kg |
| Proton mass | mp | 1.673·10−27 kg |
| Avogadro constant | NA | 6.022·1023 mol−1 |
| Boltzmann constant | k | 1.381·10−23 J/K |
| Gas constant | R | 8.314 J/(mol·K) |
| Vacuum permittivity | ε0 | 8.854·10−12 F/m |
| Molar volume of gas at STP | Vm | 22.4 L/mol |
The values are rounded to four significant figures; the acceleration of gravity is an average at the Earth surface. School problems often round further: g ≈ 10 m/s².
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