What Is the Doppler Effect?

Answer

The Doppler Effect is the term given to the apparent change in frequency of light or sound waves as the distance between the source and the observer changes. It is commonly heard when a vehicle sounding a siren approaches, passes and recedes from an observer. The effect was named after Andreas Doppler who proposed it.
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Ask.com Answer for: what is the doppler effect
Doppler effect
[dop-ler]
NOUN [PHYSICS.]
1.
(often lowercase) 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.
Source: Dictionary.com
The Doppler effect is the change in frequency of wave, maybe a wave of light or sound, as occurs when the observer is in motion or the source is moving away.
Q&A Related to "What Is the Doppler Effect"
The Doppler effect is when sound waves are either compressed or elongated by an object moving toward or away from us. The waves get compressed on approach just as a train whistle
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If you've ever watched a train zoom past, you've experienced the Doppler effect. The sound of the train's whistle gradually increases as the train nears you, then diminishes as the
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Most people are familiar with the Doppler affect from the change in pitch that happens as you move towards or away from the source of a sound. The best illustration of the Doppler
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The Doppler effect was discovered by Christian Doppler, it's namesake.
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