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Time dilation in glass?

  1. Nov 4, 2003 #1
    probably a stupid question, but that's what I'm there for...

    if light travels slower through glass than through air or vacuum, would time be going slower for me if i were sitting in a block of glass??

  2. jcsd
  3. Nov 4, 2003 #2


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    Gold Member

    No, it's the speed of light in a vacuum that matter's in relativity (infact you can completely forget about c being the speed of light in a vaccum as that is really just one of the physical values that it relates to) and not the speed of light through some medium.
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