The Problem with Black Holes - Sixty Symbols

Singularities, General Relativity and Quantum Theory - can't they all just get along?
This is the third part in a little series we're doing on Black Holes...
Featuring Tony Padilla and Ed Copeland from the University of Nottingham.

This project features scientists from The University of Nottingham

Sixty Symbols videos by Brady Haran

This project features scientists from The University of Nottingham

Sixty Symbols videos by Brady Haran

[FirefoxisredExplorerisblueGoog]

I like how professor Copeland whispers when he starts talking about cosmic string seeds - like he knows it's a naughty hope to have.

[Goldsrevenge]

Please never stop making Sixty Symbols videos Brady. This is and always has been my favorite channel.

[TheLuxma]

Just when you thought Prof. Copeland couldn't get more adorable 06:54

[mikerr]

I don't like to pick favorites, but I could listen to professor Ed Copeland all day long. Hearing him get excited and teasing about string theory makes my nerdy mind cheer :P

[YourFriendtheGeek]

"You will already be gone in terms of living"

What a nice way to put it.

[PopeLando]

I'm over 50 and have considered myself fully cognisant of physics and cosmology most of my life. So it's amazing to me to watch this and really learn something new and to realise that I previously didn't understand something as well as I thought I did. In this case, the quantum world clashing with the gravitational. Also Tony's explanation about how at high energy the symmetries reestablish themselves and mass disappears. Showing how the Higgs field physics pursued wasn't just about completing the Standard Model, but is an important paradigm for consequences of Grand Unified theories.

[suncu]

did you try to throw a rock in it to see how deep it is?

[starlight]

a stringy type structure.. a, stringularity?

[mestiarcanus]

I studied black holes a few years ago in class but I never understood the point.

[claeshenriksson]

The present Laws of physics are such Parker Squares

[HowRandomIsRandom]

Love how the whiteboard in the background becomes unfocused at 0:57 when Professor Ed Copeland says "that's when things can get smeared out."

[NWRIBronco]

I always love to see the excitement these guys have. Ed's 'secret hope' at the end is simply happiness. :)

[Gyyges]

This channel deserves an award. Just awesome content and general production. This is what The Discovery channel should have stayed true to; thoughtful explanations from passionate people who want to help educate.

[ffggddss]

Two thoughts:
1. A small point about "spaghettification" from ever stronger spacetime curvature. Often forgotten when this effect is brought up, is that along with the radial stretching of the falling object, there is azimuthal compression in the plane perpendicular to the radial direction; and this essentially doubles the effect (the strain tensor is volume-preserving).

2. In whatever turns out to be the unification theory for quantum gravity, the singularity *has* to disappear, because of the Heisenberg Uncertainty Principle, which turns spacetime at the Planck scale into a "quantum foam;" unless HUP itself somehow falls away in the unification, which seems extremely unlikely.

[DavidMcCoul]

I’m a simple man. When I see a video with Schrödinger and Einstein on the same thumbnail, I click immediately!

[Strikerklm]

"You will already be gone in terms of living by then" Physicists have the best quotes.

[Cybernatural]

I would love to hear about cosmic strings.

[bgoggin]

ask them about the uncertainty principle at the singularity.

[lamarkness]

Been watching Numberphile for a while. Had no idea about these other channels. Now I'm stoked.

[skinny]

I really like this physicist. Explains things well to a layman like me and you can tell he's only interested in the truth.