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Electromagnetic field in a medium


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An electromagnetic field, as a plane wave, has a known space-time dependence:


E = E_0⋅cos(ωt-kx).


In a transparent medium it is the same except for involving the refraction indices n.


Now, let us look at the field in a moving reference frame - that with v = c/n. What solution is for the wave in such a frame? Isn't it a


E' = E'_0⋅cos(ω't') ?

Merged post follows:

Consecutive posts merged

I meant E' = E'_0⋅cos(k'x').

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