The Doppler Effect

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The Doppler Effect Christian Johann Doppler, born November 29, 1803 in Salzburg, Austria died March 17, 1853 in Venice. Christian Doppler an Austrian Physicist who first described how the detected frequency of light and sound waves is affected by the relative motion of the source and the detector. This aspect became known as the Doppler Effect. Christian was educated at the Polytechnical Institute in Vienna. Doppler became director of the physical Institute and professor of experimental physics of the University of Vienna in 1850. In 1842 he published Uber das farbige Licht der Dopperlsterne which means Concerning the Coloured Light of Double Stars, which contained his first statement of the Doppler effect. He then theorized that since the pitch of sound from a moving source varies for a stationary observer, the colour of the light from a star should alter, according to the star's velocity relative to Earth. The cause of the Doppler effect isn't just sound. There is also light. As the source of the wave approaches or moves away to a person. For example yo...
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