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Speed of light in denser and rarer medium.

  1. Dec 6, 2009 #1

    PrincePhoenix

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    Gold Member

    I was studying refraction and as I've heard and read, it occurs due to difference between speed of light in the rarer and denser medium. But isn't speed of light common for all observers? Please don't make fun of me if I've made a stupid mistake somewhere.
     
  2. jcsd
  3. Dec 6, 2009 #2

    jtbell

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    Staff: Mentor

    Yes, but only in a vacuum.
     
  4. Dec 6, 2009 #3

    PrincePhoenix

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    Oh. Thank you for the answer.
     
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