Relativity and Cosmology

    

Doppler Effect In Relativity

Authors: Eric Su

The frequency of sound is always different in a different inertial reference frame. The Doppler effect for sound wave and electromagnetic wave is not identical. The main difference is the transmission medium. The wavelength changes if the rest frame of the wave source is different from the rest frame of the transmission medium. Without the medium, the wavelength is invariant in inertial reference frames. The Doppler effect for sound, water, and electromagnetic wave depends on the transmission medium.

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[v1] 2020-04-07 23:05:21

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