Question

Why is the derivation of the Doppler effect different for electromagnetic waves and mechanical waves?

Answer 1

the Doppler effect have different expressions for a moving source and a moving observer if movement is relative? Shouldn't the expressions for a source coming closer to the observer and the observer coming closer to the source, for example, be the same?

Answer 2

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⭕ The derivation of the Doppler effect different for electromagnetic waves and mechanical waves because the dopler effect can shift the change in the original wavelength of the origin of the wave in result of the no frequency change that's why there is always a change when we see dopler effect for both electromagnetic and mechanical waves. The source of both waves are different and their wavelength also results in the changing. At the result of both wavelength and the frequency of both the waves are changed that's why dopler effect can't be same for both types of waves.



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