Surely the speed of light through a brick is zero.
(penroseyour dog's got tits, Fri 23 Jan 2015, 16:40,
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Some will heat the brick up by an infinitesimal amount
the rest gets scattered, which is why you see it.
(CharlesDexterWardno rush eh, Fri 23 Jan 2015, 16:52,
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Some will heat the brick up by an infinitesimal amount
CharlesDexterWard no rush eh, Fri 23 Jan 2015, 16:52,
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