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what is speed of light formula. C speed of light either 30 x 108ms or 30 x 105kms. In the famous relativity equation E mc 2 the speed of light c serves as a constant of proportionality linking the formerly disparate concepts of mass m and energy E.
According to special relativity c is the maximum speed at which all energy matter and physical information in the universe can travel. TechTarget Contributor The speed of light in free space that is in a vacuum is a constant that has been measured to considerable accuracy. 299 792 458 ms although for most calculations 300 10 8 ms is sufficient.
The reason is that energy be it light waves or radiation travels at the speed of light.
This article was most recently revised and updated by Adam Augustyn Managing Editor Reference Content. Notice that for small speeds less than 01 g is approximately 1. C speed of light either 30 x 108ms or 30 x 105kms. Why would you need to multiply matter by the speed of light to produce energy.