christian j doppler

Doppler

[dop-ler]
noun
Christian Johann, 1803–53, Austrian physicist: discovered the Doppler effect.
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Etymonline
Word Origin & History

Doppler
1871, in reference to Christian Doppler (1803-53), Austrian scientist, who in 1842 explained the effect of relative motion on waves (originally to explain color changes in binary stars); proved by musicians performing on a moving train. Doppler shift is the change of frequency resulting from the Doppler
effect.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
Doppler   (dŏp'lər)  Pronunciation Key 
Austrian physicist and astronomer who in 1842 explained the effect, now named for him, of variations in the frequency of waves as a result of the relative motion of the wave source with respect to the observer.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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