The Black Hole Entropy Enigma | Space Time

DO NOT TIP. This is an unofficial YouTube mirror of PBS Space Time (https://youtu.be/Ab8JIzckx_M). If you want to tip PBS Space Time please visit https://www.patreon.com/pbsspacetime/.

Convince PBS Space Time to join Odysee!

---

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE

Thanks to CuriosityStream for supporting PBS Digital Studios. You can learn more at https://www.curiositystream.com/spacetime and use the code "spacetime" during the sign-up process.

You can further support us on Patreon at https://www.patreon.com/pbsspacetime

Get your own Space Time t­-shirt at http://bit.ly/1QlzoBi

Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime

Help translate our videos! https://www.youtube.com/timedtext_cs_...

Previous Episode: Is There Life on Mars? https://www.youtube.com/watch?v=VmEY6T5Wc-Q

Hosted by Matt O'Dowd Written by Matt O'Dowd Graphics by Luke Maroldi Assistant Editing and Sound Design by Mike Petrow Made by Kornhaber Brown (www.kornhaberbrown.com)

Black Holes should have no entropy, but they in fact hold most of the entropy in the universe. Let’s figure this out.

If black holes exist – which, apparently, they do – they contradict other theories in physics as sacred as general relativity. They cause all sorts of problems with quantum theory, which we’ve talked about and will review in a sec. But they also present an apparent conflict with the notion of entropy and the second law of thermodynamics. It was while pondering that conflict that Jacob Bekenstein realized an incredible connection between black holes and thermodynamics. His insight launched an entire new way of thinking about the universe in terms of information theory, and ultimately led to the holographic principle. Which I promise we’re getting to and we’re almost there. We just need to understand string theory first and to understand that, you’re going need to know about why Black Holes contain most of the universe’s entropy.

Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters:

Big Bang

Anton Lifshits CoolAsCats David Nicklas Fabrice Eap

Quasar

Dean Fuqua Mark Rosenthal Mayank M. Mehrota Roman Pinchuk Tambe Barsbay Vinnie Falco

Hypernova

Brent Mullins Chuck Zegar Donal Botkin Edmund Fokschaner John Hofmann Jordan Young Joseph Salomone Matthew O’Connor Ratfeast

Thanks to our Patreon Gamma Ray Burst Supporters:

Alexander Rodriguez Alexey Eromenko Benoit Pagé-Guitard Brandon Cook Brandon Labonte Daniel Lyons David Crane Deborah Whittaker Fabian Olesen Greg Allen Greg Weiss James Flowers James Hughes JJ Bagnell Jon Folks Kevin Warne Malte Ubl Mark Vasile Nicholas Rose Nick Virtue Scott Gossett Shannan Catalano سلطان الخليفي