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543,640 Views • Apr 20, 2024 • Click to toggle off description
Today we explore a problem that has haunted theoretical physicists for decades and remains a topic of active debate - do black holes destroy information? A key precept in quantum theory is that information should be conserved, yet anything that falls into a black hole is seemingly obliterated. How can we reconcile our theories of gravity with that of the quantum world? And could the answer transform the way we look at the Universe...
Written & presented by Prof. David Kipping. Special thanks to Prof Janna Levin for fact checking and for her wonderful book that inspired this video, "Black Hole Survival Guide" a.co/d/eqqP6z1
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THANK-YOU to D. Smith, M. Sloan, L. Sanborn, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, N. Kildal, Z. Star, E. West, T. Zajonc, C. Wolfred, L. Skov, G. Benson, A. De Vaal, M. Elliott, B. Daniluk, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, C. Souter, M. Gillette, T. Jeffcoat, J. Rockett, D. Murphree, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, C. Macdonald, M. Hedlund, P. Kaup, C. Hays, W. Evans, D. Bansal, J. Curtin, J. Sturm, RAND Corp., M. Donovan, N. Corwin, M. Mangione, K. Howard, L. Deacon, G. Metts, R. Provost, B. Sigurjonsson, G. Fullwood, B. Walford, J. Boyd, N. De Haan, J. Gillmer, R. Williams, E. Garland, A. Leishman, A. Phan Le, R. Lovely, M. Spoto, A. Steele, K. Yarbrough, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, B. Pearson, S. Thayer, T. Edris, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay, X. Yao, S. Saverys, M. Pittelli, A. Nimmerjahn, C. Seay, D. Johnson, L. Cunningham, M. Morrow, M. Campbell, R. Strain, B. Devermont, & Y. Muheim.
REFERENCES
► Bekenstein, J. 1972, "Black Holes and Entropy", Physical Review D: ui.adsabs.harvard.edu/abs/1973PhRvD...7.2333B
► Hawking, S. 1975, "Particle Creation by Black Holes", Communications In Mathematical Physics,: ui.adsabs.harvard.edu/abs/1975CMaPh..43..199H
► Hooft, G.'t, 1993, "Dimensional Reduction in Quantum Gravity", General Relativity & Quantum Cosmology: ui.adsabs.harvard.edu/abs/1993gr.qc....10026T
► Susskind, L. 1995, "The World as a Hologram", Journal of Mathematical Physics: ui.adsabs.harvard.edu/abs/1995JMP....36.6377S
► Maldacena, J. 1997, "The Large N Limit of Superconformal field theories and supergravity", Advances in Theoretical and Mathematical Physics: ui.adsabs.harvard.edu/abs/1998AdTMP...2..231M
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0/) or with permission from the artist.
0:00 Hill - The Travelers [open.spotify.com/track/5EfCXFyDpZmu0u6hM3ByjK?si=7…]
2:51 Chris Zabriskie - We Were Never Meant to Live Here
4:30 Hill - The Great Alchemist [open.spotify.com/track/3PAx36jIsKiQMT9CQsRk4G?si=c…]
9:33 Falls - Life in Binary
11:55 Hill - A Slowly Lifting Fog [open.spotify.com/track/0GgkyL3y22kFslT6wUsKlt?si=3…]
13:23 Falls - Ripley
17:06 Chris Zabriskie - Cylinder Seven
19:11 Joachim Heinrich - Y
21:32 Indive - Halo Drive
CHAPTERS
0:00 Prologue
0:30 Black Holes 101
3:18 Storyblocks
4:30 Unitarity
6:19 Into the Black Hole
7:19 Hawking Radiation
9:33 Entanglement
11:29 The Paradox
13:56 Solutions
15:02 Holography
17:48 Concessions
19:11 Firewall
19:48 Conclusions
21:32 Outro & Credits
#BlackHoles #Cosmology #CoolWorlds
Views : 543,640
Genre: Science & Technology
Date of upload: Apr 20, 2024 ^^
Rating : 4.933 (293/17,102 LTDR)
RYD date created : 2024-05-10T00:36:06.817542Z
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YouTube Comments - 1,478 Comments
Top Comments of this video!! :3
Please don't break the universe, it's where I keep all my stuff.
1.8K |
My older brother is a physics professor. When we were growing up, he used to let me look through his telescope (the first time I ever saw Saturn was mind blowing!) while he would explain things about space and the universe using language and concepts that even my brain, with its woefully pitiful lack of mathematical understanding, could comprehend.
Long story short, I love these videos because they remind me so much of those nights during my childhood looking up at the sky with wonder while someone explains the universe to me. Thank you for that.
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fun fact: in german, "Schwarzschild" actually means "black shield", so the Schwarzschild radius translates literally to "black shield radius", which seems somehow very appropriate.
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Ah, a physics video about my bank account
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Nothing is broken, our math describing what we see as reality is just incomplete. A deeper understanding will come in time. If you think about it, a black hole is the perfect place for our current models to expose their flaws, pointing the way to new knowledge. Its analogous to how Mercury's orbit helped point us towards GR from classical Newtonian physics.
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I always imagined blackholes as some type of logical glitch in the universe that "crashes" a part of reality like how a game would crash
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Black holes are where all the missing socks are
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That clip of Picard at 11:45 had me in tears! Thanks for the best laugh of 2024!
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Maybe this is the answer to the Fermi Paradox. The best minds of every civilization waste so much time pondering blackhole conundrums they never get round to deflecting the asteroid.
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"Who knew studying something so dark -"
could be so enlightening!
"- could reveal so much."
oh
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Using pine cones to describe particle spin....there's a first time for everything!! Your video's break my brain, but they are purely amazing at describing complex concepts. Thank you!!
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PS: the notion of an event horizon being a surface which, once crossed, not even light can escape from, has led to the misconception that something could cross that horizon back "outwards" if it went faster than light. However, the event horizon is the area underneath which spacetime is curved in such an eldritch way that this "outwards" doesn't even exist as a valid direction anymore, no matter at which speed one is traveling. It just happens to follow from the laws of general/special relativity that this surface is the same as the collection of points at which there is only one single direction that does not point towards the singularity and to follow that direction, one must travel at light speed (c). (From some models of spacetime, it also follows that anything higher than c is simply not a valid speed: picture an object with no spatial velocity as traveling at c entirely through time- its speed vector points into the time dimention but not into any spatial dimension. Accelerating that object to any observable speed simply makes that vector point partly into spatial dimensions, but its absolute value always stays at c.)
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The way I had black holes explained to me as a child by a physics professor was to imagine a neutron star was reduced in radius to 1/6, to as little as 1/10th of its current diameter. He said that’s where he believes a round black mass (not a hole) resides. He also explained that light can not escape it because light can not exist inside of a black mass (hole), due to the extreme gravitational forces that quite literal rip apart what created the light.
That conversation sparked my curiosity about the universe. This video reminded me of him.
Thanks for that.
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I love how much science can be built on top of math involving mass, without us having the slightest idea what mass is. Amazing to me.
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watching videos like these give me so much motivation to keep going in my PhD. i'm doing neuroscience and although it's not physics, i can definitely relate to that feeling of not knowing how to begin understanding the fundamental properties of what we're studying. the brain can sometimes feel like a black hole and i think that's pretty terrifying, but cool at the same time
thanks for the video
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The outdoor background is incredible. Wish more YouTubers of your style would try it out. So refreshing ❤
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This channel is just incredible! Thank you so much for making these ideas a little more accessible to non-experts like me. This universe is truly awesome.
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I always love listening to your videos. I can’t fully comprehend all the information, but it is so fascinating
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Dr. K it's been a while since I've enjoyed the cool world lab content...just hadn't been showing up in my scrolling :( & sadly until I stumbled across your Lex F conversation I have only seen a video or 2 in over a yr! Sorry mate, it's truly my loss & am glad the universe brought me back to these masterpiece creations. I love the angles and approach you take to providing us with knowledge & somehow still offer an aspect of entertainment. Well balanced, perfectly done, excellent execution. Thank you & all the team for binging us quality. Stay blessed & know that we all appreciate what you folks do to bring us what we crave. I've had great teachers but have learned much more important & relevant info from YouTube, you & the handful of others I trust to tell accurate facts but also the many theories that stimulate our brains, in agreement or skeptical hardly do i ever doubt or totally dismiss what genius scientists believe but even what may not strike me as possible but questioning things alone leads to my own theories but prefer the term hypothesis because what y'all do is the definition of educated guesses at very least. Glad to be back, stay blessed everybody
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@CoolWorldsLab
2 weeks ago
Thanks to Storyblocks for sponsoring this video! Download unlimited stock media at one set price with Storyblocks: storyblocks.com/CoolWorlds Let me know your thoughts on this one - what do you think will yield: unitarity, equivalence or locality? Do you have a specific solution you favour?
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