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.
[youtube=http://www.youtube.com/watch?v=415VX3QX4cU]
[youtube=http://www.youtube.com/watch?v=_v3g1_tv7ts]
