Is there anything whose velocity is more than the velocity of loght

Asked by tuhindutta38 | 1st Nov, 2017, 12:21: PM

Expert Answer:

While electrodynamics holds that the speed of light in a vacuum is a universal constant (c), the speed at which light propagates in a material may be significantly less than c. For example, the speed of the propagation of light in water is only 0.75cMatter can be accelerated beyond this speed (although still to less than c) during nuclear reactions and in particle accelerators. Cherenkov radiation results when a charged particle, most commonly an electron, travels through a dielectric (electrically polarizable) medium with a speed greater than that at which light propagates in the same medium.

Answered by  | 1st Nov, 2017, 01:38: PM