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Speed of Sound

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detective | 19:21 Sun 06th May 2007 | Science
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What is the phenomenon called which causes the change in the observed frequency of sound waves due to the relative motion between the source and the observer as, for instance, in the case of a railway whistle as atrain approaches and passes?
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The Doppler Effect
20:15 Sun 06th May 2007

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Speed of Sound

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