What does Albert Einstein have to do with electromagnetic waves?

Answer 1

Einstein proposed many ideas about EM waves (ie, light) that have been shown to be correct:

1) That EM waves come in packets (now known as photons) and the energy of each photon depends on the frequency of that light.

2) The speed of light will be measured as the same, no matter how fact the observor is moving. From this postulate, one can derive the Lorentz-Fitzgerald Contraction, time dilation, and mass increase.

3) That Rayleight Scattering, when occuring in a fluid with rapid density fluctuations, will result in a blue sky, not a milky white one. The question, "Why is the sky blue?" has a far more complicated answer than almost everyone realizes.