what is dopplers effect
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Doppler effect
noun
PHYSICS
an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move towards (or away from) each other. The effect causes the sudden change in pitch noticeable in a passing siren, as well as the red shift seen by astronomers
noun
PHYSICS
an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move towards (or away from) each other. The effect causes the sudden change in pitch noticeable in a passing siren, as well as the red shift seen by astronomers
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The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. ... Hence, the time between the arrival of successive wave crests at the observer is reduced, causing an increase in the frequency
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