Otten, Ernst Wilhelm Institut für Physik, Johannes Gutenberg-Universität Mainz, Mainz, Germany.
- Acoustical Doppler effect
- Optical Doppler effect
- Additional Readings
The change in the frequency of a wave observed at a receiver whenever the source or the receiver is moving relative to each other or to the carrier of the wave (the medium). The effect was predicted in 1842 by C. Doppler, and first verified for sound waves by C. H. D. Buys-Ballot in 1845 from experiments conducted on a moving train.
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