How the Doppler Effect Works


Name Recognition
Christian Doppler
Christian Doppler
Imagno/Hulton Archive/Getty Images

In 1992, Austria marked the 150th anniversary of the discovery of the Doppler effect by releasing a stamp featuring the thin face of Christian Johann Doppler. Although Doppler never could have imagined such a tribute, he did grasp the significance of his work from the very beginning. In the 1842 paper that first described the phenomenon, Doppler offered this prediction: "It is almost to be accepted with certainty that [the Doppler effect] will in the not too distant future offer astronomers a welcome means to determine the movements and distances of such stars which, because of their unmeasurable distances from us and the consequent smallness of the parallactic angles, until this moment hardly presented the hope of such measurements and determinations." 

The "not too distant future" ended up being almost 100 years, which is how long it took for the Doppler effect to have a major impact on cosmology, meteorology and medicine. But it certainly made an impact and made Doppler one of the most recognized names in the history of science.

For more ­information on the Doppler effect and related topics, visit the links below.

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Sources

  • Barnes-Svarney, Patricia, ed. The New York Public Library Science Desk Reference, Macmillan. New York, 1995.
  • "Christian Johann Doppler: the man behind the effect," British Journal of Radiology 75 (2002). 615-619.http://bjr.birjournals.org/cgi/content/full/75/895/615
  • The Doppler Effect and Sonic Booms http://www.kettering.edu/~drussell/Demos/doppler/doppler.html
  • Doppler Radar on USA Today Web Site http://www.usatoday.com/weather/wdoppler.htm
  • Doppler Ultrasound on the Mayo Clinic Web Site http://www.mayoclinic.com/health/doppler-ultrasound/AN00511
  • Engelbert, Phyllis, and Dupuis, Diane L. The Handy Space Answer Book. Visible Ink Press, Michigan. 1998.
  • Gundersen, Erik.The Handy Physics Answer Book. Visible Ink Press, Michigan, 1999.
  • Radar FAQs on the National Weather Service Web Site http://www.srh.noaa.gov/radar/radinfo/radinfo.html
  • Trefil, James. 1001 Things Everyone Should Know About Science. Doubleday. New York, 1992.

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