Index
DEFININGCONSTANTSYMBOL: c
- PID: si:definingconstantsymbol:c:2019
- Definition: The speed of light in vacuum, c, is exactly 299 792 458 m/s.
- Source: SI Brochure 9th Ed. 2019, p 127
- Formatted:
299 792 458 m s-1
- Numerical Value: 299792458
- Unit: m s-1
- Unit in Base SI: m s-1
- Notes
- This value was fixed by the CGPM in 1983 (Resolution 1) and reiterated by the CGPM in 2018 (Resolution 1).
- The speed of light in vacuum is a fundamental constant that determines space-time properties and affects all particles and fields equally on all scales and in all environments.
- Representations
- Text:
c
- HTML:
<em>c</em>
- Latex:
c
- Text:
- Related Definitions
- isConstantSymbolOf -> speed of light in vacuum