Doppler effect
noun [U] /ˈdɒp.lə.rɪˌfekt/
/ˈdɑː.plɚ.ɪ-/ (also Doppler shift) specializedDefinition
› a change that seems to happen in the rate of sound or light wave production of an object when its movement changes in relation to another objectParticular theories and concepts in physics
(Definition of Doppler effect noun from the Cambridge Advanced Learner's Dictionary & Thesaurus
© Cambridge University Press)
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