doppler effect - PowerPoint PPT Presentation

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doppler effect

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doppler effect principle of saturation specroscopy – PowerPoint PPT presentation

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Title: doppler effect


1
Doppler Effect
2
Resting sound source
Frequency fs
V340m/s
Frequency fo
source at rest
observer at rest
3
Sound source moving toward observer




Observer hears increased pitch (shorter wave
length)
Frequency fo
Frequency fs
source
observer at rest
4
Sound source moving away from observer




Observer hears decreased pitch (longer wave
length)
Frequency fo
Frequency fs
observer at rest
source
5
Frequency heard by observer
  • Source moving toward observer.
  • Perceived wavelength
  • With
  • Observer

6
Observed frequency
  • Source toward observer
  • Increased frequency
  • Source away from observer
  • Decreased frequency
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