The Doppler effect in sound,in addition to th | vedclass

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(B) The Doppler effect in sound occurs in a material medium,so the velocities of the source and the observer relative to the medium are significant.In

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Einstein's theory of relativity

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(B) The Doppler effect in sound occurs in a material medium,so the velocities of the source and the observer relative to the medium are significant.In contrast,light does not require a material medium for propagation.According to Einstein's theory of relativity,the speed of light is constant in all inertial frames of reference.Therefore,in the case of light,only the relative velocity between the source and the observer determines the shift in frequency,as there is no absolute frame of reference (like a medium) for light.

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