made an experimental study of the Doppler effect (1848).

General

For relative speeds much less than the speed of light, the effects of special relativity can be neglected.Then the relationship between observed frequency and emitting frequency of a wave propagating through a medium is given by:

where
* is the propagation speed of the wave in the medium;
* ' is the speed of the wave receiver relative to the medium. In the formula, is added to if the receiver

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