Energy, such as light, propagates from the sun, but when it strikes an object such as the Earth, it stops or is reflected. Other small particles propagate through the universe and pass through the Earth unaffected by it, but they also do not affect the Earth.
Gravity, on the other hand, strikes the Earth, it acts on the Earth by pulling the Earth toward the sun, but Gravity continues on out into space without seeming to be slowed down by its interaction with the Earth. How is this possible? It seems there is no way to block gravity. Is it reasonable then to infer that gravity does not therefore propagate? Did Einstein believe it propagated?
2006-11-30
00:22:25
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3 answers
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asked by
Math Guy
2
in
Physics