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Doppler effect   /dˈɑplər ɪfˈɛkt/   Listen
Doppler effect

noun
1.
Change in the apparent frequency of a wave as observer and source move toward or away from each other.  Synonym: Doppler shift.





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"Doppler effect" Quotes from Famous Books



... this space because of their intense gravitational fields. There are probably slight fluctuations in the field, perhaps one every minute or so. Since we were approaching them at twenty thousand times the speed of light, the Doppler effect gives us what looks like ...
— Islands of Space • John W Campbell


Words linked to "Doppler effect" :   propagation


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