# Speed of Light

Written by Jerry Ratzlaff on . Posted in Classical Mechanics

Speed of light, abbreviated as c, in a vacuum, travels at a speed of exactly 299,792,458 meters per second, or about 300,000 kilometers per second, a speed which remains constant irrespective of the speed of the source of the light or of the observer.

## Speed of Light formula

 $$\large{ c = \lambda \; f }$$

### Where:

$$\large{ c }$$ = speed of light

$$\large{ f }$$ = frequency

$$\large{ \lambda }$$  (Greek symbol \lambda) = wavelength

Tags: Equations for Speed