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Doppler effect

3:02

The Doppler Effect: what does motion do to waves?

2:45

Doppler Effect

2:48

Red Shift and Doppler Effect

2:28

The Doppler Effect - Christmas Lectures with RV Jones

3:51

Ultrasound Physics - Explaining Doppler

The Doppler effect is the change in frequency or wavelength of a wave in relation to observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842.
  • History 

  • Application 

  • Inverse Doppler effect