Doppler Effect (noun) Definition, Meaning & Examples

noun Physics.
  1. the shift in frequency (Doppler shift ) of acoustic or electromagnetic radiation emitted by a source moving relative to an observer as perceived by the observer: the shift is to higher frequencies when the source approaches and to lower frequencies when it recedes.
noun
  1. a phenomenon, observed for sound waves and electromagnetic radiation, characterized by a change in the apparent frequency of a wave as a result of relative motion between the observer and the source
    Doppler Effect (noun) Definition, Meaning & Examples

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