If you had a hollow sphere that was perfectly reflective on the inside, and completely inescapable (ie, nothing can escape the interior - this being due to a perfect seal, not because of gravity), and you had a means to turn on and off a light source inside the sphere, and you have a way of observing what happens inside the sphere, what happens when you turn on the light, and then turn it off? Is light forever present in the sphere? And what if we make the assumption that none of the light is lost as heat? Does turning on the light source for longer periods of time add "more" light to the inside - how could this quantity be measured?
2007-07-03
09:41:48
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17 answers
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asked by
Anonymous
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Physics