An asymmetric world

Abstract

My father once filmed a friend diving into a swimming pool. He liked to show the film in reverse, so that a big splash converged on the swimmer and expelled him from the water. The obvious impossibility of the reversed sequence of events illustrates the fact that our world is not symmetric under time reversal. Most people are not worried by the asymmetry… (More)
DOI: 10.1038/438919a

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