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Definition[]

The Doppler shift (also called Doppler effect) is

[t]he apparent change in frequency of sound or light waves caused by the relative motion between a source and an observer. As they approach one another, the frequency increases; as they draw apart, the frequency decreases.[1]

Overview[]

"The Doppler shift . . . is named for Austrian physicist and mathematician Christian Andreas Doppler."[2]

References[]

  1. Wiki.GIS.com, GIS Glossary (full-text).
  2. Id.
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