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Homework Help: Light waves

  1. Oct 20, 2007 #1
    Problem: red light of wavelength 560nm is passed from air into glass where its velocity is 1.96 x 10^8 m/s.
    (c=3*10^8)
    Find the frequency of the light in air and the wavelength of the light in glass.

    Can someone please tell me what c is and what formulas i need to use.
    thanks
     
  2. jcsd
  3. Oct 20, 2007 #2

    Hootenanny

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    Staff Emeritus
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    c is the symbol for the speed of light in a vacuum.

    Have you met the concept of refraction?
     
  4. Nov 15, 2007 #3
    Is this how u could calculate the velocity?
    n=vair/vglass
    vglass=vair/n
    (3x10^8/1.52) = 197368421.1 m/s
     
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