Quote:
Imperator Fyron said:
Quote:
Kamog said:
A light beam shining through glass will slow down and it does speed up again once it exits the glass. Why does it speed up again when it exits the glass? That's a good question, and I don't know why. I'm very curious as to what the reason is. But I think the reason a block of glass will heat up when light is shined though it is because the glass is imperfect and not completely transparent. Part of the light is absorbed and turned to heat. So not all the light emerges from the other side.
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It doesn't actually slow down, it just refracts within the glass and appears distored...
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Light does slow down through different mediums. If I recall correctly, light travels quite a bit slower through water than it does through a vacuum. Or it might be faster, I'm not sure. (If I'm totally wrong on this point, please correct me, but it seems to be what I remember from physics Last year). Therefore, the only thing that can exceed the speed of light, is light itself (depending on the medium)
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Re: OT:Tempted to get this book
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