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Paul Halpern

@phalpern

Physicist and Science Writer. Author of eighteen books, most recently The Allure of the Multiverse: Extra Dimensions, Other Worlds, and Parallel Universes

calendar_today16-01-2009 03:37:10

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Paul Halpern
@phalpern

3 weeks ago

A Tale of Four Blackboards:

Albert Einstein: estimating the age of the universe

Niels Bohr: final blackboard depicting quantum thought experiment called the Einstein Box

Richard Feynman: final blackboard with inspiring words

John Wheeler: thinking in pictures

A Tale of Four Blackboards: Albert Einstein: estimating the age of the universe Niels Bohr: final blackboard depicting quantum thought experiment called the Einstein Box Richard Feynman: final blackboard with inspiring words John Wheeler: thinking in pictures
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