The Doppler Effect

  • Donald McGillivray
Part of the Dimensions of Science book series (DIMOSCI)


The velocity of electromagnetic radiation in a vacuum is a constant which depends only upon the magnetic permeability and electrostatic permittivity of free space. This velocity is independent of any movement of the source or observer, but the same is not true of the wavelength and frequency of radiation. If the source is moving towards the observer there is an apparent increase in frequency and decrease in wavelength, and the converse is also true.


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Copyright information

© Donald McGillivray 1987

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  • Donald McGillivray

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