NOVA

The Elegant Universe: Part 3 Preview

Preview: Season 30 Episode 14 | 30s

Brian Greene shows how Edward Witten of Princeton's Institute for Advanced Study, aided by others, revolutionized string theory by successfully uniting the five different versions into a single theory that is cryptically named "M-theory," a development that requires a total of eleven dimensions.

Aired: 11/23/11

Rating: NR

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