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rob, Sun 1 Apr 2001, 1:00)
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If you got a non-flexible tube that is one light year long, and you pushed it at the exact same time as you shined a light through it. What would happen first on the other end? Does that mean that it has moved faster than the speed of light? Does it mean that it's impossible for anything to be a lightyear across?
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G/PP 💩💩💩💩💩€, Tue 16 Aug 2011, 15:32,
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15 years ago)
The movement of an object is still limited by the speed of light.What would happen is that at about the speed of light there will be a compression wave moving along the tube. Think of it as a slinky but not visible. That moves at pretty much the speed of light depending on the material and so the light and the movement of the tube will move at very similar times. Light should beat it though because there is no slowdown.
(, Tue 16 Aug 2011, 15:38, Reply)
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