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Does Gravity Require Extra Dimensions?

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ 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. Sign Up on Patreon to get access to the Space Time Discord!   / pbsspacetime   Check out the Space Time Merch Store https://pbsspacetime.com/ Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/space... Hosted by Matt O'Dowd Written by Katie McCormick & Matt O'Dowd Graphics by Leonardo Scholzer, Yago Ballarini, & Pedro Osinski Directed by: Andrew Kornhaber Camera Operator: Bahaar Gholipour Executive Producers: Eric Brown & Andrew Kornhaber End Credits Music by J.R.S. Schattenberg:    / @jrsschattenberg   #space #astrophysics #gravity Special Thanks to Our Patreon Supporters Big Bang Supporters Alexander Tamas David Nicklas Fabrice Eap Juan Benet Morgan Hough Radu Negulescu Quasar Supporters Christina Oegren Mark Heising Vinnie Falco Hypernova Supporters William Bryan Chuck Zegar Danton Spivey Donal Botkin Edmund Fokschaner Hank S John Hofmann John Pollock John R. Slavik Jordan Young Joseph Salomone Julian Tyacke Mathew Matthew O'Connor Syed Ansar Timothy McCulloch Gamma Ray Burst Supporters A G Adrian Hatch AlecZero Andreas Nautsch Andrew Richmond Bradley Jenkins Brandon labonte Brandon Lattin Brian Blanchard Cass Costello Craig Stonaha Dan Warren Daniel Lyons David Bethala David Hughes DFaulk Eric Kiebler Frederic Simon Geoffrey Short Graydon Goss Greg Smith Jennifer Crosley John Funai John Griffith John Robinson Josh Thomas Justin Waters Kevin Lee Kevin Warne Kyle Hofer Malte Ubl Mark Daniel Cohen Michael Conroy Mirik Gogri Nick Virtue Nick Wright Nickolas Andrew Freeman Patrick Sutton Paul Rose Protius Protius Robert Ilardi Scott Gossett Sean Warniaha Shane Calimlim Simon Oliphant Steve Bradshaw Tatiana Vorovchenko Tim Stephani Tonyface Tybie Fitzhugh Yannick Weyns Yurii Konovaliuk