Its exact value is defined as 299 792 458 metres per second approximately 300 000 kms or 186 000 mis. To c alculate the time dilation enter a percentage of the speed of light c and press the button to continue. History at your fingertips.
V velocity of the object in ms or kms - same units used by c.
Mhz and GHz and the calculator will do the transformations. The wavelength of light usually measured in meters or Angstroems 1 A 10 -10 m f the frequency at which light waves pass by measured in units of per seconds 1s. Formula to calculate wave period from wave length l and speed. Distance speed of light time s c t Please enter distance or time the other value will be calculated.