'if we force a sock in with a lot of energy and violence, the room collapses on itself and becomes a black hole'
fuck my guest room did that last week.
[video=youtube;ny59kjNfuZA]http://www.youtube.com/watch?v=ny59kjNfuZA[/video]
Relevant. Also why do I watch Kurzgesagt right before bed? It always makes the existential dread set in.
Oh christ time to have another existential crisis.
General relativity is the coolest course I ever took, and black holes are the coolest part of it. When we got to the part of the course where we talked about Penrose diagrams for the crazier black holes and what they mean and started talking about alternate universes beyond the event horizon, I felt like I was learning real science fiction shit.
It's amazing how much research in quantum gravity pushing the boundaries of what we know to the extreme is done by thinking about black holes, which we've never directly observed (depending on what you mean by that). They're extremely useful objects for testing understanding.
Would a black hole in a universe with no life have less information than one with extremely chaotic life?
So holograms in our reality are holographic projections of a 3D object that is actually a hologram too. Then who was 3D object?
Even though its completely theoretical atm, would wormholes be another possible solution to the information paradox?
i.e. Black holes do not store their information on the surface but instead transfer it to the other end of the wormhole preserving the information.
This is the first one that actually confused me.
[QUOTE=Tampong;52608365]This is the first one that actually confused me.[/QUOTE]
That's good, if you had understand it means your insane.
he he
he
...
I feel like the music at the beginning has to be an intentional homage to Interstellar.
[QUOTE=LoneWolf_Recon;52608354]Even though its completely theoretical atm, would wormholes be another possible solution to the information paradox?
i.e. Black holes do not store their information on the surface but instead transfer it to the other end of the wormhole preserving the information.[/QUOTE]
I don't know the state of the art on this, but the realistic black hole models I know of that have wormholes still have singularities as well, so it doesn't avoid the problem of what happens when matter hits the singularity.
Ah yeeaah, my daily dose of existential crisis, as provided by the greatest of all: Kurzgesagt.
That aside, actually a really good video. I hope they'll make a follow up, or something related to it.
[QUOTE=Hogie bear;52608070]Oh christ time to have another existential crisis.[/QUOTE]
Kurzgesagt helps fill the gaps inbetween vsauce video releases
See I've heard the theory before that the universe was a hologram, but I heard it from one of those shitty popular science articles where they were suggesting that it was a simulation-style hologram, not a lower-dimensional representation of a higher-dimensional thing.
always so great to watch those, now i do wonder if i'm hologram too ;)
[QUOTE=Hiccuper;52609597]See I've heard the theory before that the universe was a hologram, but I heard it from one of those shitty popular science articles where they were suggesting that it was a simulation-style hologram, not a lower-dimensional representation of a higher-dimensional thing.[/QUOTE]
How does that work, by the way? I mean, can a 3D object somehow be recorded onto a 2D surface? Does a hologram of a cube contain just one "view" of the cube, or all possible views? Are the insides of the cube recorded, too?
[QUOTE=Nikita;52609627]How does that work, by the way? I mean, can a 3D object somehow be recorded onto a 2D surface? Does a hologram of a cube contain just one "view" of the cube, or all possible views? Are the insides of the cube recorded, too?[/QUOTE]
These are mathematical ideas that have holographic properties, and yes they can be a complete description of something. A stupid example is if I tell you a particle is moving around in 3D space in such a way that it's z coordinate is always 0. Well, it may be in 3D space, but it's entirely in plane, so you can draw its motion entirely on a flat piece of paper.
The real thing which is big these days is AdS/CFT, where you have a theory of gravity/strings living in a volume which is dual to a theory of particles living on a boundary, which has lower dimension. These gravity and particle pictures are completely equivalent descriptions of the same information.
[editline]24th August 2017[/editline]
[QUOTE=Hiccuper;52609597]See I've heard the theory before that the universe was a hologram, but I heard it from one of those shitty popular science articles where they were suggesting that it was a simulation-style hologram, not a lower-dimensional representation of a higher-dimensional thing.[/QUOTE]
Pop sci has been awful about that, and it's a shame because holography is really cool.
I've actually never heard of this hologram business with black holes and that's actually pretty crazy and scary at the same time.
By the way, if anyone wants more info on the black hole information paradox and the basics of holography with respect to black holes, The Black Hole War by Leonard Susskind is a very readable book written for laypeople on the subject.
[QUOTE=JohnnyMo1;52608799]I don't know the state of the art on this, but the realistic black hole models I know of that have wormholes still have singularities as well, so it doesn't avoid the problem of what happens when matter hits the singularity.[/QUOTE]
I imagine that'll be one of the big problems if we ever discover actual wormholes. Designing a ship capable of traversing such a hostile, high gravity environment in order to reach the other side. If it's even possible to develop such a system, that is.
I looked more into the stuff they were talking about expecting to get it but it's incredibly confusing and complicated. :v: I guess that shows how good Kurzgesagt simplifies things! It's so effortless for them but those wiki pages are thick and complex. It's really neat of them, and I love their videos so much.
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