 The
Open Door Web Site |
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Waves The Doppler Effect The diagram
below represents waves emitted by a source of sound, S, which
is stationary relative
to the air.
The next diagram represents waves emitted by a source which is moving (with velocity vs) relative to the air.
Motion of the source produces a change in the wavelength, shorter wavelength in front of source, longer wavelength behind.
Motion of the observer produces a change in the apparent frequency of the waves. |
© David Hoult 2008 |
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