On 9/23/11 1:23 PM, Brooke Clarke wrote:
Hi again:

What is the speed of light in rock?



that's a really interesting question, because it's not like a EM wave propagating, where the dielectric constant is what you care about. OTOH, I suppose that since EM waves are also photons, there must be some sort of propagation constant. But what's the permittivity of rock at the frequency (energy) of a neutrino


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