Physics Astronomy

Doppler Effect

Example of redshift and blueshift

  • Change in frequency of a wave in relation to an observer who is moving relative to the wave source
    • A stationary source produces waves with a specific wavelength
    • If the source moves towards/away from the observer, the observer will see the Doppler effect
  • Each successive wave crest is emitted from a position closer/further from the observer than the crest of the previous wave
    • Each wave takes slightly less/more time to reach the observer than the previous one