PBS Space Time

Feynman's Infinite Quantum Paths

Season 3 Episode 8 | 11m 39s | Video has closed captioning.

There is a fundamental limit to the knowability of the universe. The Heisenberg uncertainty principle tells us that the more precisely we try to define one property, the less definable is its counterpart. Knowing a particle’s location perfectly means its velocity is unknowable. But unmeasured properties are not just uncertain; they are undefined.

Aired: 07/07/17

Rating: NR

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Problems Playing Video? | Closed Captioning