Symmetry, realitys riddle Marcus du Sautoy on

The world turns on symmetry — from the spin of subatomic particles to the dizzying beauty of an arabesque. But there’s more to it than meets the eye. Here, Oxford mathematician Marcus du Sautoy offers a glimpse of the invisible numbers that marry all symmetrical objects. (Recorded at TEDGlobal 2009, July 2009, Oxford, UK. Duration: 18:19)

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