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Doppler effect

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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
 
Doppler toppler After 60 years of anticipation, experimenters finally created an inverse Doppler effect, an increase in the frequency of an electromagnetic wave, rather than the usually observed decrease in frequency, from a receding source (164: 358).
Physics by Science News
Precipitation moving toward the radar causes the electromagnetic waves to bounce back with higher frequency--it's called the Doppler effect.
Gone with the wind: last spring, the most savage tornadoes in U.S. ... by Finton, Nancy / Science World
To the right of these two works hung Tomaselli's Doppler Effect in Blue, 2002, with its swirling strings of collaged eyes, ears, mouths, hands, feet, flowers, birds, and insects, all interspersed with actual pills.
"The Heavenly Tree Grows Downward: Harry Smith/Philip Taaffe/Fred ... by Strauss, David Levi / Artforum International
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