What If Gravity is NOT Quantum?
1,445,430
Published 2023-11-09
PBS Member Stations rely on viewers like you. To support your local station, go to:to.pbs.org/DonateSPACE
Sign Up on Patreon to get access to the Space Time Discord!
www.patreon.com/pbsspacetime
The holy grail of theoretical physics is to come up with a quantum theory of gravity. But after a century of trying we really have no idea how close we are, or it it's even possible. But we shouldn't feel bad because it turns out that the universe is doing everything it its power to make this as difficult as possible. Or it's telling us that it isn't. Should we take the hint?
Check out the Space Time Merch Store
www.pbsspacetime.com/shop
Sign up for the mailing list to get episode notifications and hear special announcements!
mailchi.mp/1a6eb8f2717d/spacetime
Search the Entire Space Time Library Here: search.pbsspacetime.com/
Hosted by Matt O'Dowd
Written by Christopher Pollack & Matt O'Dowd
Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria
Directed by Andrew Kornhaber
Associate Producer: Bahar Gholipour
Executive Producers: Eric Brown & Andrew Kornhaber
Executive in Charge for PBS: Maribel Lopez
Director of Programming for PBS: Gabrielle Ewing
Assistant Director of Programming for PBS: John Campbell
Spacetime is produced by Kornhaber Brown for PBS Digital Studios.
This program is produced by Kornhaber Brown, which is solely responsible for its content.
© 2023 PBS. All rights reserved.
End Credits Music by J.R.S. Schattenberg: youtube.com/user/MultiDroideka
Space Time Was Made Possible In Part By:
Big Bang Sponsors
Bryce Fort
Peter Barrett
David Neumann
Sean Maddox
Alexander Tamas
Morgan Hough
Juan Benet
Vinnie Falco
Fabrice Eap
Mark Rosenthal
Quasar
Glenn Sugden
Alex Kern
Ethan Cohen
Stephen Wilcox
Mark Heising
Hypernova
Stephen Spidle
Chris Webb
David Giltinan
Ivari Tölp
NullBlox.ZachryWilsn
Kenneth See
Gregory Forfa
Bradley Voorhees
Scott Gorlick
Paul Stehr-Green
Ben Delo
Scott Gray
Антон Кочков
Robert Ilardi
John R. Slavik
Donal Botkin
Edmund Fokschaner
chuck zegar
Jordan Young
Daniel Muzquiz
Gamma Ray Burst
Anthony Leon
Billy Holland
Leonardo Schulthais Senna
Lori Ferris
James Sadler
Dennis Van Hoof
Koen Wilde
Nicolas Katsantonis
Piotr Sarnicki
Massimiliano Pala
Thomas Nielson
Joe Pavlovic
Justin Lloyd
Chuck Lukaszewski
Cole B Combs
Andrea Galvagni
Jerry Thomas
Nikhil Sharma
Ryan Moser
John Anderson
Scott Hannum
Bradley Ulis
Craig Falls
Kane Holbrook
Ross Story
teng guo
Mason Dillon
Harsh Khandhadia
Susan Albee
Matt Quinn
Michael Lev
Terje Vold
James Trimmier
Jeremy Soller
Paul Wood
Joe Moreira
Kent Durham
Jim Bartosh
Ramon Nogueira
The Mad Mechanic
John H. Austin, Jr.
Faraz Khan
Almog Cohen
Daniel Jennings
Russ Creech
Jeremy Reed
David Johnston
Michael Barton
Isaac Suttell
Oliver Flanagan
Bleys Goodson
Mark Delagasse
Mark Daniel Cohen
Shane Calimlim
Tybie Fitzhugh
Eric Kiebler
Craig Stonaha
Frederic Simon
Tonyface
John Robinson
Jim Hudson
David Barnholdt
John Funai
Bradley Jenkins
Vlad Shipulin
Cody Brumfield
Thomas Dougherty
King Zeckendorff
Dan Warren
Joseph Salomone
Patrick Sutton
All Comments (21)
-
That bit with the equations ending up with the Schwarzschild radius is like the universe is doing stand-up comedy and going “thank you, I’m here all week”
-
My favorite channel where I don't understand 90% of what's going on but still continue to watch lol
-
Considering how much crazy stuff gravity is responsible for I wouldn't be surprised if it was even more fundamental than everything else we know
-
I will never be not amazed by people who REALLY understand math. You people are gifted beyond believe.
-
This is what S tier quality content looks like Youtube. Promote more of THIS and less REACTIONS/PUNDITS/CLIP CHANNELS to the world. Signed the Internet.
-
The fact that the graviton detector model maths spat out the Schwarzchild radius and so would prevent any confirmation of the existence of the graviton made me laugh more than it should have. The irony is amazing. "We did it! We made a graviton detector!" "Awesome! Where is it?" "In that Planck-sized black hole in the cor..."
-
It’s crazy how literally the most recorded/observed universal force still remains a mystery.
-
Us: what's gravity really? Universe: Shhh don't worry about it
-
I love how in all this insanely complex science the one thing Matt chooses to clarify is "1khz - that's a thousand hertz". Thanks Matt, it all makes sense now!
-
This always confused me. Doesn’t Einstein’s theory mean that gravity is NOT a force but the curvature of Spacetime? If so, why would it act the same as the other “forces” and have any need to be quantized?
-
The more i become convinced Emergent Gravity proponents are onto something... gravity doesn't act at all like the other forces, most likely becouse it's not a fundamental force but rather an emergent one, like pressure
-
Matt I did the survey, just for you! To show my gratitude towards you. So kind of you for posting videos that helps me to increase my knowledge and intelligence time to time! I eagerly look forward to more videos from SpaceTime! ❤
-
11:51 - Thank you for clearing up what a kilohertz was. Everything else in this video is easily understood, but without knowing what this strange kilohertz thing was, none of it would have made any sense whatsoever. So, thank you again.
-
I always wondered: why would it be quantum if gravity is just curvature of space?
-
It'd be cool a video about negative masses and why they are not considered. Thanks Matt for the cool video!
-
The fact that from quantum definitions, such as the uncertainty principle and Planck's distance, one can derive a relativistic concept such as the Schwarzchild radius, seems to indicate to me that there might be something there that connect both.
-
15:05 I literally got chills when that equation appeared. is that as weird/spooky as it feels?
-
This gives me a good enough reason to live the next few trillion years. Who can be done with life when we still don’t know if gravity is quantized?
-
"Your videos always leave me in awe and eager to learn more about the mysteries of the universe. Thank you for fueling my curiosity. "
-
I love the fact I just begin theorising and mindstroming as soon as we started the questioning!
