• Question: what is the speed of light???

    Asked by bendtner52 to Mark on 14 Jun 2010 in Categories: .
    • Photo: Mark Lancaster

      Mark Lancaster answered on 14 Jun 2010:

      300 million meters per second or 671 million miles per hour. In a vacuum nothing can travel fast than this and it is constant (this is Einstein’s Special Theory of Relativity). Anything that has no mass will travel at the speed of light in a vacuum – if you have mass then no matter how much effort you put into acceleration you will never reach the speed of light e.g. the protons in the LHC get to 0.999999991 the speed of light and no amount of energy will get this to 1.0000.

Comments