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Possible to adjust light with magnetic field?

  1. Jun 1, 2010 #1
    Hey im new to this forum, ive browsed around a few threads on here and found them to be quite insightful. I have a question for the physics gurus of this forum. To my understanding, light waves consists of an electric and magnetic field perpendicular to each other. If one constant were to change, would it then change the other constant? So if a beam of light were directed toward a magnetic field, is it possible to change the wave length of the beam?
  2. jcsd
  3. Jun 1, 2010 #2
    Yes, it was discovered long ago by Faraday. See "the Faraday effect".
  4. Jun 1, 2010 #3
    so it is possible to send a red beam of light through a faraday rotation device and have it come infrared on the other side?
  5. Jun 1, 2010 #4
    No,the effect changes the angle of polarization wrt the magnetic field, not the frequency. Have you read the article?
  6. Jun 1, 2010 #5
    yeah is there a way to change the wavelength of the magnetic field to force any beam that would pass through it to change to the wavelength of said magnetic field and not just the polarization of it?
  7. Jun 1, 2010 #6
    No, you could accomplish this only with the introduction of gravity, and this would be observer-dependent and temporary.
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