PBS Space Time

Does Gravity Require Extra Dimensions?

Season 6 Episode 17 | 12m 41s Video has closed captioning.

It’s been 120 years since Henry Cavendish measured the gravitational constant with a pair of lead balls suspended by a wire. The fundamental nature of gravity still eludes our best minds - but those secrets may be revealed by turning back to the Cavendish experiment. That steampunk contraption may even reveal the existence of extra dimensions of space.

Aired: 05/29/20

Rating: NR

From:

Problems Playing Video? | Closed Captioning