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Motion of light in a gravitational field

  1. Feb 24, 2012 #1
    Would it be correct to say that light follows a cycloidal path in the presence of a gravitaitonal field, in accordance with the principle of least time?
     
  2. jcsd
  3. Feb 24, 2012 #2
    Hi Khil_phys
    Why cycloidal ? don't you mean brachistochronic ?
     
  4. Feb 27, 2012 #3
    I did mean brachistochronic. What will be that brachistochrone?
     
  5. Feb 27, 2012 #4

    A.T.

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  6. Feb 27, 2012 #5

    A.T.

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    No. The brachistochrone is quickest path in gravity for a massive object with zero initial velocity. But light already has an initial velocity, and the path is dependent on its initial direction.
     
  7. Feb 27, 2012 #6
    Thank you :)
     
  8. Feb 27, 2012 #7
     
    Last edited by a moderator: May 5, 2017
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