Awasome Why Is The Speed Of Light Special References. Web to summarize, without postulating that the speed of light is invariant, one can derive the form of the lorentz transformations from just the principle of relativity. Web the only thing that affects the speed of light is the refractive index of the medium through which it moves, and for empty space, this number is 1.000000 and gives you the maximum possible speed of light.
Web what had set off mr. Web the speed of light is the upper limit for the speeds of objects with positive rest mass, and individual photons cannot travel faster than the speed of light. In glass, it is 1.3333 times smaller since c/n = c/1.333 = 300,000 km/sec/1.333 = 225,000 km/sec.
