MODULUS / REFERENCE
Physical constants
Frequently used physical constants and their units.
| Symbol | Value or formula | Description |
|---|---|---|
| c | 299 792 458 m/s | Speed of light in vacuum. |
| g₀ | 9.80665 m/s² | Standard acceleration of gravity. |
| G | 6.67430×10⁻¹¹ m³/(kg·s²) | Gravitational constant. |
| h | 6.62607015×10⁻³⁴ J·s | Planck constant. |
| kB | 1.380649×10⁻²³ J/K | Boltzmann constant. |
Values are provided for reference. Check the required unit system and conditions before engineering or laboratory use.