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Doppler effect
(redirected from Doppler shift)

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Doppler effect

Change in the observed frequency (or wavelength) of waves due to relative motion between the wave source and the observer. The Doppler effect is responsible for the perceived change in pitch of a siren as it approaches and then recedes, and for the red shift of light from distant galaxies. It is named after the Austrian physicist Christian Doppler.



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? Mentioned in ? References in periodicals archive
 
This Doppler shift will indicate wind speed to an accuracy of a meter per second.
A titan of a mission: parachuting through smog to Saturn's moon by Cowen, Ron / Science News
This non-contact, laser velocimeter employs Laser Doppler Shift Technology to offer accurate and repeatable measurements of speed and length Contact: 1-508-832-3456
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The second-order Doppler shift is of order 3 X [10.
Primary atomic frequency standards at NIST by Wineland, D.J. / Journal of Research of the National Institute of Standards and Technology
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