Why should the speed of light be same in all non accelerating frames of reference?

c^2 = permeability of free space*permittivity of free space.
As per Maxwell’s electromagnetic equations.
If speed of light varied from one inertial frame of reference to another, then physics would be different in every plane, car, planet and so on.
Of course Michelson and Morley also proved this experimentally.
Once we get this in our heads, we are getting ready for the theories of relativity.

Lakhmi, anupagAminI, whose movement is incomparable, light, moves equally fast in your frame of reference and mine. She is not partial to you or me.

Atoms are held together by the electromagnetic force carriers ie photons. The universe is held together by threads of light, by Lakshmi Mata!

Time

About these ads