Student Dictionary

One entry found for Doppler effect.
Main Entry: Doppˇler effect
Pronunciation: primarystressdäp-lschwar-
Function: noun
Etymology: named for Christian J. Doppler 1803-1853 Austrian physicist
: a change in the frequency with which waves (as of sound or light) from a source reach an observer when the source and the observer are moving rapidly toward or away from each other

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