I cannot provide the references, but many experiments have been done where a pulse of light propagating through a thin medium where the light becomes evanescent exceeds the speed of light in vacuum. In at least one experiment the claim is that the pulse actually appears to emerge from the medium before it enters it, if you take the pulse peak to mark its location.

Let us recall that the emperor used the constancy of the speed of light as a proof of god, or something like that. The level of creationist science is typified by him.

• It's as clear as ....um...you know; it's, like, unclear! - spazcon - August 30, 2002 - 01:04 UTC
  • It's based on a wave description of nature - yanniru - August 30, 2002 - 14:18 UTC
    • It's nice of you to explain...did they explain their work thusly - carefuluniverse - August 30, 2002 - 19:59 UTC