VISUALIZING THE IMPOSSIBLE
In this occasional series on science, which started a year ago (2/06) with The Search for Dark Matter, I discussed Einstein's concept of special relativity last August in A Personal Journey Through Relativity. Jack Wheeler provided an engaging account of it two years ago (2/05) in Aristotle, Einstein, and Ayn Rand.
Einstein though did not have a Theory of Relativity -- ‘a' as in one. He had two. His Special Theory is about the relativity of time. His General Theory is about the relativity of gravity. The puzzles and paradoxes of the first pale in comparison to those of the second.
So much so that most anyone can visualize clocks telling time at different rates and astronauts coming back from another galaxy much younger than the people they left on earth. The math and explanations may be hard but one can at least visualize the effects of special relativity.
It seems well-nigh impossible to visualize gravity not as a force but as a manifestation of curved space.