HN Theater @HNTheaterMonth

The best talks and videos of Hacker News.

Hacker News Comments on
Hawking Radiation

PBS Space Time · Youtube · 2 HN points · 5 HN comments
HN Theater has aggregated all Hacker News stories and comments that mention PBS Space Time's video "Hawking Radiation".
Youtube Summary
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE

It’s the most famous prediction of perhaps the most famous genius of our time ... Stephen Hawking's theory of Hawking Radiation.

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_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g

Quantum Vacuum Playlist
https://www.youtube.com/playlist?list=PLsPUh22kYmNAHB1W2_Ka2F83sObdczwKr

Previous Episode:
Should Space be Privatized?
https://www.youtube.com/watch?v=wJ7d503fN-g

Soon after Einstein revealed his great general theory of relativity in 1915, physicists realized that it allowed for the possibility of catastrophic gravitational collapse. In places of extreme density like the dead core of a massive star, space and time could be dragged inwards to create a hole in the universe: a boundary in spacetime called an event horizon that could be entered, but from beyond which nothing could return. Once formed, there was nothing in theory or imagination that could bring material consumed back to the outside universe. These black holes should exist forever – only growing, never shrinking.

References:

Black Hole Explosions?
S. W. Hawking (1974)
https://www.nature.com/articles/248030a0 (paywall)

Particle Breation by Black Holes
S. W. Hawking (1975)
https://link.springer.com/article/10.1007%2FBF02345020 (paywall)
https://projecteuclid.org/euclid.cmp/1103899181

Hawking Radiation as Tunneling
M. K. Parikh & F. Wilczek (2002)
https://arxiv.org/abs/hep-th/9907001

Hosted by Matt O'Dowd
Written by Matt O'Dowd and Graeme Gossel
Produced by Rusty Ward
Graphics by Grayson Blackmon
Assistant Editing and Sound Design by Mike Petrow and Linda Huang
Made by Kornhaber Brown (www.kornhaberbrown.com)

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

Big Bang
CoolAsCats
David Nicklas
Faisal Saud
Anton Lifshits
Joey Redner

Quasar
Tambe Barsbay
Mayank M. Mehrota
Mars Yentur
Mark Rosenthal
Dean Fuqua
Roman Pinchuk
ColeslawPurdie

Hypernova
Matthew O’Connor
Eugene Lawson
Martha Hunt
Joseph Salomone
Chuck Zegar
Craig Peterson
Jordan Young
Ratfeast
John Hofmann
Barry Hatfield
Edmund Fokschaner
Kevin Costello


Thanks to our Patreon Gamma Ray Burst Supporters:
James Hughes
Fabian Olesen
Kris Fernet
Jane Meyers
James Flowers
Greg Allen
TJMadision
Denys Ivanov
Nick Virtue
Alexey Eromenko
Nicholas Rose
Scott Gossett
Mark Vasile
Patrick Murray
Sultan Alkhulaifi
Alex Seto
Michal-Peanut Karmi
Erik Stein
Daniel Lyons
Kevin Warne
JJ Bagnell
J Rejc
Avi Goldfinger
John Pettit
Florian Stinglmayr
Benoit Pagé-Guitard
Nathan Leniz
Brandon Labonte
David Crane
Greg Weiss
HN Theater Rankings

Hacker News Stories and Comments

All the comments and stories posted to Hacker News that reference this video.
Your description of hawking radiation isn't quite accurate. It's a popular misconception. the actual process is not as easy to understand. see below:

https://youtu.be/qPKj0YnKANw

That said, what the OP said about "borrowing" electrons I am not sure about.

at_a_remove
It's more of an accounting deal. There's mass where there didn't used to be, and it was pretty near here so ... we gotta make the books balance.
I hope this helps: https://www.youtube.com/watch?v=qPKj0YnKANw
andrewflnr
Actually... yes, which just makes it worse that something about that presenter's style really rubs me the wrong way. Do they have their content in text format somewhere? Anyway, thanks!
guerrilla
I'm sure somone's made transcripts but I have't come across them yet
man, watch the PBS YouTube channel SpaceTime. They're short, informative, and very well done. they dedicate a handful of episodes to getting you ready for Hawking radiation.

https://youtu.be/qPKj0YnKANw

stallmanite
Seconding that recommendation. The clear explanations allowed me to grasp several concepts that I've been trying to understand for decades, for example the "one-electron universe"
westurner
"Why Quantum Information is Never Destroyed" re: determinism and T-Symmetry ("time-reversal symmetry") by PBS SpaceTime https://youtu.be/HF-9Dy6iB_4

Classical information is 'collapsed' quantum information, so that would mean that classical information is never lost either.

There appear to be multiple solutions for Navier-Stokes; i.e. somewhat chaotic.

If white holes are on the other side of black holes, Hawking radiation would not account for the entirety of the collected energy/information. Is our visible universe within a white hole? Is everything that's ever been embedded in the sidewall of a black hole shredder?

Maybe even recordings of dinosaurs walking; or is that lemurs walking in reverse?

Do 1/n, 1/∞, and n/∞ approach a symbolic limit where scalars should not be discarded; with piecewise operators?

dharmab
I love their dedication to building up over multiple episodes instead of dumbing things down every time.
The particle-antiparticle explanation is just an analogy and doesn't really cover what actually happens. I thought this video from PBS Space Time explains it really well while keeping it accessible for non-physicists: https://www.youtube.com/watch?v=qPKj0YnKANw
stcredzero
And that video is good background info for the one on the Unruh Effect, which I found truly mind-blowing!

https://www.youtube.com/watch?v=7cj6oiFDEXc

Any time we accelerate, we produce a distant effective event horizon behind us! Also, "The Unruh" would make for a good name for aliens in Star Control!

There's lots of different ways to approach explaining the phenomenon of hawking radiation, PBS space time does a good job here: https://www.youtube.com/watch?v=qPKj0YnKANw

Ultimately, hawking radiation does not come from within the event horizon, so it can escape into the wider universe.

Mar 17, 2018 · 2 points, 0 comments · submitted by aphextron
HN Theater is an independent project and is not operated by Y Combinator or any of the video hosting platforms linked to on this site.
~ yaj@
;laksdfhjdhksalkfj more things
yahnd.com ~ Privacy Policy ~
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.