I could listen to Brian talk about a lump of cheese for 7 hrs . Never has a man smiled so much while talking. He always looks happy 😊

@faneproductions

Жыл бұрын

A man full of knowledge & joy! 🧠

@britishmick

Жыл бұрын

@@faneproductions spot on, that’s why he’s so intelligent, he finds learning fun ie he’s full of wander, which in turn benefits us, it’s like having a family member who really enjoys cooking for other people and is also a really good cook too 😂

@MrElvis1971

Жыл бұрын

And he is incredibly respectful of people who hold different views to him. A true scientist and a gentleman.

@kybushdr

Жыл бұрын

po

@jestermoon

Жыл бұрын

Take A Moment Both have the same genius body language, they both can say "little giggling things" and explain quantum bits Genius. We will be around once our Sun has stuff inside goe's Bang As a species, we are giving it a good old college try Hitch would say Thank you both. "Keep looking up" as Prof Tyson would say.

These two make the best unintentional ASMR for geeks I've ever heard.

I’m constantly astounded on what human beings have achieved, certainly in terms of figuring a vast amount of knowledge about space & time.

As the talk went on, Jeff became more relaxed. By the end he was really flowing and showing his passion. Brian (with so much more experience on tv) excellent as always.

Jeff Forshaw is an amazing teacher. So willing to share, kind and also funny. His old students say his lectures are amazing and that the man is incredibly clever. Manchester Uni is really lucky to have this wonderful team !

Yet another book I need to buy. The list is getting huge.

@faneproductions

Жыл бұрын

We know the feeling! 😅📚

Brian is a good man

Damn, remember second year lectures with Jeff and by god his intellect was intimidating. These two make a great pairing

There is a big hole in our understanding of Quantum Gravity and General Relativity in how they are compatible. There is one place in the Universe where both are unified - and on display. Black holes. The answer to physics deepest questions lie there. Fascinating discussion between two weapons-grade intellects. Thank you!

@datura_boof

Жыл бұрын

Grabity is so weak

So we have fallen into a blackhole, and times has ceased to pass, but because we still exist infinitely at the event horizon, we feel the sensation of the fractal experience of eternity.

I'm so excited for the next couple of decades of discoveries, what a great time to be alive, yet again Cox at his finest putting very complex science into terms which the average Joe like myself can understand. Great talk loved every minute of it.

I think my interest has very much been rekindled! Thank you gentlemen.

Loved the book and absolutely fascinated by the non intuitive concepts that are beginning to emerge from the study of blackholes. Great explanations throughout

Knowledge is what makes our lives worthwhile. That is to me enough to justify why we study physics regardless of whether the subject is useful or not. Why some paintings worth billions of dollars? Why someone is important to you? Why putting a ball into the goal can earn someone billions of dollars in salary? It is all our perceptions of reality. It is all relative.

Struggling a little with the book, rereading chapters 1, 2 and 3, but this discussion has helped a lot. Brilliant idea to help understanding. 🙂

Just bought this book, absolutely mind bending!

My brain on the other hand is not a black hole, everything escapes it

@antonkjellman1960

Жыл бұрын

"white hole" 😂

@Im-Kaspa

10 ай бұрын

Black holes might not hold everything in, they've seen what looks like matter escaping a black hole recently

@nothingmanofgod.6288

10 ай бұрын

red hole blue hole green hole it exist from nothin🤔

@nothingmanofgod.6288

10 ай бұрын

who see color hole🤔

@crazyizzy3609

2 ай бұрын

You have a white hole in your brain.

Thank you for this

@faneproductions

Жыл бұрын

Thanks for watching Roland!

This is rad so long and not edited so we get uncensored conversation

Brian and your friend.. Brilliant!!Bravo! Thankful.😅

Awesome to see a Sarah Maas book on the shelf there Brian or Jeff, one of my favorite authors. Very cool.

I love you Brian ❤ 🥺 🤣 seriously

Great video.

Frozen to the edge of the event horizon for all eternity. Juicy,

This was just awesome.

It would be great to have a pint with these two in a pub in Ireland. So interesting.

@Rick-sr5oj

3 ай бұрын

..... in a pub .... anywhere they choose!!!!!

This is a great book. One of the best "popular-science" books I've ever read. The authors have done a great pedagogical effort to make a difficult subject accesible to a broader audience without sacrifying the rigour. No cheap analogies or half-truths here. This is serious book, very well written, with wonderful, clarifying and well-chosen figures. Still, the layman will have a hard time trying to grasp all the details: general relativity has its twists and turns. The last three chapters are more speculative, although the fascinting ideas (the holographic universe, the conexion between black holes and quantum computation) are consequences of clever reasoning and rely on solid physics and mathematics ground. To me, Brian Cox and Jeff Forshaw's "Black holes" has come as a revelation. Good job!

I love this subject but personally I can only handle so much of it in one session then I have to break off, too mind blowing! Really enjoyed this video but feel like I need to play some music now to bring me back a bit. Moby 😃

just got the book.Brian your amazing how you bring the universe to the masses

You are fantastic Brian, saw d'ream at Birmingham uni years ago. Anyway if we live in side of black hole, what about the insane gravity?????

I shall purchase this book when I can.

For some reason people don't know that Einstein said that singularities are not possible. In the 1939 journal "Annals of Mathematics" he wrote "the essential result of this investigation is a clear understanding as to why the Schwarzchild singularities (Schwarzchild was the first to raise the issue of GR predicting singularities) do not exist in physical reality. Although the theory given here treats only clusters whose particles move along circular paths it does seem to be subject to reasonable doubt that more general cases will have analogous results. The Schwarzchild singularities do not appear for the reason that matter cannot be concentrated arbitrarily. And this is due to the fact that otherwise the constituting particles would reach the velocity of light." Einstein was referring to the phenomenon of dilation (sometimes called gamma or y). This is illustrated in a common relativity graph with velocity (from stationary to the speed of light) on the horizontal line and dilation on the vertical line. The graph shows the squared nature of the phenomenon, dilation increases at an exponential rate the closer you get to the speed of light. Mass that is dilated is smeared through spacetime relative to an outside/stationary/Earthbound observer. General relativity does not predict singularities when you factor in dilation. Einstein is known to have repeatedly spoken about this, nobody believed in black holes when he was alive for this reason. According to Einstein's math, the mass at the center of our own galaxy must be dilated, in other words that mass is all around us. This is the original explanation on why we can't see light from the galactic center.

Brian is the man, also guest 👍

I'm finally kinda understanding it's not so much the gravity, it's the curvature of the gravity created object that creates the black hole

@Boballoo

Ай бұрын

Gravity IS the curvature of space around mass.

Good discussion. How about more discussions on different topics? IE about the nature of light, neutrinos, quantum gravity.

This is really interesting, can you re-write particle physics with this quantum bits idea?

i don’t understand the freezing time part … if something goes inside a black hole, it will look like it’s frozen at the event horizon (im guessing)to an outside observer . does that mean you could see things that have gone inside black holes frozen in time assuming if you could view a black hole up close? im confused

@cstew8355

Жыл бұрын

😆 first conclude in your own mind if you can prove a black hole even exists mate! Start from there use common sense! You can’t observe, test and repeat then it’s probably not much science to it it’s fantasy

@reeceohara9124

10 ай бұрын

@@cstew8355 theres a photo of one…..

I love black holes forever

@stuartculshaw5342

Жыл бұрын

You and your relative perspective

If from outsiders perspective one frizes forever at the event horizon why black holes appear "black" iso full of all "fallen" bodies? And when does the radius of a black hole does increase since fallen body appears frozen at the horizon?

I am an exister that suddenly found awareness to be eternal and individualized. I don’t know from where my knowledge, understanding or wisdom originates. It feels as though I have been applying the same in different realms for eternity. The following is presented for your consideration. What you’re calling the event horizon is simply the attainment of the speed of light. At which point everything stops and reverts to two dimensions. Time is the catalyst from which the third dimension emerges. No spaghetfication. No concept of motion. Information only from one perspective. Beyond the speed of light, you begin to transition to one dimension. Information from any perspective. Eventually arriving at dimension zero. Purely thought, free to conceptually create.

This is the first time I’ve ever understood a black hole. 👍

Interesting bookshelf...

Nice chat. Both spegetified and turned into radiation are correct depending on perspectives. The particle smears in highly distorted space time. The spegetified particle gets distributed across a set of time frames with different rates. One view the particle is there and another it is destroyed producing radiation. What would you say about neutrinos falling into a black hole and forming a fluidic surface and how light falling through the compacted fluidic neutrinos might act. The center of a black hole is a future event censored multiple ways. A Zeno paradox for infalling particles. The closer to the center the higher distortion factor in time.

Michael Faraday & JCM Would be humbled by you chaps..

Would be crazy if we actually are in a black hole, like thats what our universe was born from. Cause like he said, that "middle" just stretches indefinitely, likewise our universe is expanding indefinitely, im sure theres a million reasons why this isnt the case, but it crossed my mind the minute they described the black hole center as stretching forever. Very cool similarity, if nothing else 🙏

Can someone explain how we go from both incineration on the event horizon + spaghettification underneath being true to the holographic principle? I understand up the point of both outcomes being true at the same time

@cstew8355

Жыл бұрын

It’s nonsense mate don’t even try it’s meant to not be understood but by trying to understand it you give yourself this air of superiority by trying or by pretending to understand it! The guys a charlatan who prays of the fact no one gets it.

Hawking: - Nobody will be able to measure the temperature of a black hole, lets create an equation that nobody can prove wrong -

These guys are sooooo good at explaining things but some things make my brain itch in so much as !, if gravity in and around a black hole is so powerful nothing can escape then how can it be hot because heat / light and matter cannot get out. I might be missing something and am happy to be educated !.

As you explained that the event horizon projects the holographic reality which leads me to the interior of the black hole spaghettifies down to singularity that somehow is what is the idea that is dark matter being forced into the fabric of spacetime causing the expansion of the universe through the singularity?

@manicmadpanickedman2249

Жыл бұрын

I already explained this over a year ago on my channel.... i explained it, so even a 1st grader could understand the way it works .. . It's really simple ... try chemistry, that's real science.. This is literally and really .. as easy as pi .. enertia gravity and inertia . time is perpetuated... Harmoni Trinity Triarch Torus Tesla Three three three is 9 is 3 of 1 ... Holy Holy holy, Is thee .... Helmholtz Gibbs And non chemical unstable equalibrium... Negative dc gradient ... Positive ac flux ... Ect.. dualism and non dualism ...

@manicmadpanickedman2249

Жыл бұрын

Boundary expansion and field collapse

The guy might not be a genius at the very top level but he is very close. he is the best educator we have after sir David falls

I heard somehere that black holes might not have a singularity that breaks physics and there are some other theories. Can someone point me where can i read/watch about it ?

Anyone got tips on how to not get lost in this? Thinking about the profundity/absurdity of existence is sometimes debilitating. I suppose we evolved to desire answers and that’s why we “are.” But this makes unanswerable questions maddening. Just the human condition I guess?

@EeekiE

6 ай бұрын

My guess is learn a shit load of mathematics and physics, understand the implications but *still* not be able to picture it as we didn’t evolve to understand the very small or very massive. I wish I could even get a good grasps on 20% of what they’re saying 🥲

In Chapter 2 of the book, why are the values for Deltas R, T & X (Aggers & Tom) all SQUARED? I'm trying hard to not skip over anything I don't understand (which is not easy), so please help me.

If the time dilation is an effect observed "only" by the observer outside the event horizon (but not experienced by the one who fell in), wouldn't the sketching of space be also an effect observed by the observer outside? Could the one who fell in experienced the sketching of his or her body as they are falling in?

@loopbackish

Жыл бұрын

Yes, the person outside sees the one inside stretched to infinite time, and the one inside feels themselves stretched to infinite space. The one inside also sees the one outside squashed to zero time (they see the end of the universe) but the one outside never sees the end of time.

"If you entered the black hole before me, I can see you below me." Err, no, surely??? There is no way for light to get from the first person that entered to the second person. Or is my understanding incorrect?

Two professors discussing quantum entanglement and hawking radiation, with a copy of Lenny Henry's biography on their bookshelf. Mrs. Henry would be proud of her boy 😁

The issue I have with the current idea of time stopping at the event horizon is that if we think of time being past, present and future, then there is a time preceding entry ie past, there is then the present of being within the black hole and a future of being radiated out as Hawkins radiation so therefore time never actually stops right? And surely this wouldn’t differ from perspective right (ie looking from within or from outside the hole)?. Surely one could not observe the object pre entry and the radiation post entry simultaneously?

@dimitrispapadimitriou5622

Жыл бұрын

It's only the "coordinate time" that "stops" on the event horizon. The "proper " time of an infalling object goes on as usual ( until the end at the singularity). There's not an absolute notion of time both for distant and close to the horizon observers.

We need a Hollywood movie with a blackhole as the protagonist. Interstellar was great, but I'd pay and also buy popcorn ✌️

Check sound levels before uploading video.

A book from Jeremy Vine on the shelf ; could that be the answer ?

This thought occurred to me while listening to this and driving a delivery route: In a quantum vacuum, as particles generate and annihilate, one may become real if generated near the event horizon of a black hole. Given this, would it not be plausible to speculate that, acknowledging the extreme conditions of the early universe, gravitational fluctuations could be so intense, that when particles generate, the forces at work prevent them rejoining and annihilating entirely? If so, conditions could exist such that particles are only generated, never annihilating; thus giving a reasonable guess as to how a newborn universe is populated with particles in the first place!

@jjzr2man1

Ай бұрын

It's funny and I'm glad I'm not the only one that does a mundane job and thinks of these deep concepts... somewhere in the 10 billion brain's on this planet lies the answer...if we could only combine the Brains and have them think in unison

Two main things occur to me regarding this subject. One is, our galaxy with us & our solar system, situated somewhere within the radius of 50 plus light years from ‘our’ black hole - a cascade of wonder, billions of stars, life etc.. etc… but that given nothing escapes the super black hole in the centre of it all, IT would have absolutely no awareness of any of that wonder going on around it, just itself, oblivious to all & how destructive it is. Second is, us & our sun is travelling around ‘our’ super black hole @ 830,000kph, if therefore for some reason this and all the other stars were to slow down enough, then we, & all the other stars (solar system’s etc..) would be IN the event horizon and we’d begin our inevitable collapse back to the singularity leaving ONLY & all matter, a black hole. It’s only our velocity that’s graciously allowing our existence. Third is🤔, taking all this into account, i don’t think ‘black hole’ is a particularly good name, more like a pet name a child might give to an object it doesn’t recognise, but feels it describes what it looks like. In reality, It’s hardly a ‘hole’. Thanks for your efforts Brian & your colleagues, it’s all beautifully thought provoking.

Whilst were aware of Black Holes and Their Ability to draw in an despose of mass in every situation there is a start and finish. An inlet and outlet. Where does what enters LEAVE ??? Why does it remain a transparent source of Energy or is it a transport in to another or alternate Dimension???

If the image of everything that passes the event horizon freezes on it for eternity then why don't we see all of the frozen Images of everything a blackhole has eaten?

interesting library, cox's or forshaw's?

When it comes to the geometry of a black hole In 2D the singularity means something like a pointy hole. In 3D geometry I always imagine it is an inverse sphere, not a point. Basically the spherical inside of the event horizon.

So the person going into the black hole would stretch infinitely but if I was spectating watching someone go into a black hole they would still be stuck there in there normal shape? Someone help I’m confused

When was this filmed?

@faneproductions

10 ай бұрын

The stream was originally broadcast on the 4 Oct 2022. Thanks!

It's too quiet, i cannot hear it through my laptop

@nicholasmassey6941

Жыл бұрын

put headphones in thats what i had to do, but i have a crappy dell on windows, mac books have better speakers

So a black hole is a catapult?

🙌🏽🌟🙌🏽

Grandma Cox is at it again

I'm imagining the event horizon as point zero on the surface, where all particles falling away and disappearing inside the black hole are the theorized super symmetrical particles (e.g., "squarks", etc.), while all the particles trapped on the horizon (i.e., matter cannot be destroyed) are the normal-matter particles (e.g., quarks). Perhaps the reason the LHC/CERN has not discovered these super symmetrical particles as expected, is that they only exist or emerge inside the event horizon of black holes.

@cstew8355

Жыл бұрын

Matter can’t be destroyed It also can’t be observed at least 90% (dark matter) how does that work! If you can see it how do you know it’s their or can’t be destroyed.

Omg.. I consider myself an educated man..I’m scientifically trained.A dentist.. to train or even get into dental school you have to be be really au- fait with science. However what’s being talked about in this video is so mind-blowing. And frankly impenetrable . I loved A level maths.. can’t remember ANY of it now.. but am I correct in thinking you need maths and physics equations to truly understand the things you are explaining?

@jjzr2man1

Ай бұрын

Not math....it transforms from math to philosophy

@sreno66

18 күн бұрын

Mike hunt, how many of these comments are sincere do you think?

could you imagine, just speculating. That there's a mass of tachyon particles (not a real particle) that a black hole either ran into or got in its way. Wonder what happens then. Guess it depends on how we define a tachyon and if it has imaginary mass or not if it existed. Really hope we can find their existence though if they do exist, but is just not a lot of it in the universe like anti-matter.

If a ship is built with enough hull that can withstand the forces it should be able to manipulate it's vector to escape the gravity well. Remember it's just a big ball of gravity that could help hyperspace for very large large very very large galactic traveling ships. It's a pinwheel spinning around.

@EeekiE

6 ай бұрын

But beyond the event horizon you’d need to travel faster than light to escape, which isn’t possible right?

@BrianWilliamDoty

6 ай бұрын

I think it will take a warp engine to escape on the proper gravitational trajectory. Preferably toward one of its poles direction, not through the accretion disk. If I were the government I would set up star bases and stargates around every black hole in the galaxy.

@BrianWilliamDoty

6 ай бұрын

I think it depends how far you are in the gravity well to be able to escape at specific velocities the ship's engines need to produce but you can use the slingshot method around the gravity well to escape towards the axial poles of the black hole,.@@EeekiE

I think we exist in 2 dimensions (on the surface of the universe) and the 3rd dimension is projected which may explain strange particle behaviours we see and explains why everything travels in waves. I also think the Particles we can "observe" are projected and are a not representative of the underlying mechanism. This may mean we will never truly understand the real workings of the universe.

@pipedup

7 ай бұрын

Except we are obviously 3 dimensional

@13:40 I thought, these are quantum fluctuations, not quantum entanglement?

Also thinking if you freeze ! So how do u see the light photons of u frozen for such a long time infinite maybe so energy is frozen but the energy none stop keeps coming to u ! Who is above observing!!

@Octomusprime

Жыл бұрын

the observer

Bros so clever he's secretly flipping us the bird 7:04

Does anyone else think this: Black holes consume everything around them…eventually other black holes. Does their gravitational power reach a point to where it absorbs the fabric of space time faster than it expands…then with begins to consume onto its self, only able to great a denser and denser single point…. That point becomes so singular and dense it explodes and that was the Big Bang?

@anndutton5448

7 ай бұрын

I think Matt O’Dowd posits this on Space Time.

@connorduffy8620

7 ай бұрын

@@anndutton5448 ooo thanks I’ll go check it out!

What if I had a super long stick , and I poked it into a black hole. Some of the stick is in the black hole and rest isn’t. Can’t we just “pull” it out?

💯💯💯💯💯💯🙏

Thank you for this. I really miss the BBC Horizon shows. Please keep us updated via other means like this as I cant get to your tour shows because of disability. Talking about tours, will you be putting them on dvd or stream, I would love to watch them. @profbriancox4431

Effectively, we don't know. Much of it is all theoretical. Like most scientists, I'm very intrigued to learn more.

Gents how do you know all this

If we lost our loved one's and he or she gets incinerated or buried. They still exist as atoms, is there way to detect those atoms or communicate with them?

@hamzaabbas2354

Жыл бұрын

No.

@stuartculshaw5342

Жыл бұрын

@@hamzaabbas2354 Well that was brutal.

@stuartculshaw5342

Жыл бұрын

The atoms and therefore the information contained in those atoms and structures exist forever, or at least for a period of time that is infinite in our timeframe; thats all I think anyone knows. There is plenty of amazing and wonderous facts about energy and quantum information without the need to imagine anything supernatural; I lost my mum not too long ago and I reckon it will take years for the pain to settle. Peace dude.

How do the super massive black holes get created ?

@TravisNRG

Жыл бұрын

A Supermassive black hole is what's at the center of every galaxy. Regular black holes can be created in multiple ways. Usually has to do with dying stars. Any star 20x our sun will transform into a black hole eventually.

@stuartculshaw5342

Жыл бұрын

Galaxies contain many black holes but only one super massive black hole, the one at it's centre. So the SMBH seems to be a result of the formation and pepetuation of the galaxy, the bigger the galaxy, the bigger the hole. It's all gravity.

@artykillen9251

Жыл бұрын

I’d imagine black hole stars and dark matter halos play a part. With our current understanding tho the universe is way too young for some of the supermassive black holes to be so big, we don’t know how..yet

What came 1st us or the black hole?

Brian, firstly hello from south manchester. Secondly, stick to presenting your videos alone. They're so much easier to listen to. No offence to the other guy but you're much clearer to us the audience when you talking directly to us. Love your videos, keep making them.

Anything that goes in...is broken down into the constituent building blocks of the universe. Broken down to it's most simple form. So it can be transferred into a new universe. The radiation we see is the byproduct of the energy needed to transfer/push through..said matter through the space time fabric layer that exists at the bottom of the singularity.... exhaust fumes if you will.

Does that picture prove beyond doubt that it is indeed a black hole? Outside of theory is there other sources of proof? I'm not doubting there existence, i truly would like to know. My understanding up till recently was that they were purely theoretical.

What exactly is hawking radiation...? Has anyone ever tried to describe it...?

Hi. I must disagree with concept that by entering event horizon on the black hole, the time freezes. I agree that slows down. The best proof of this, is observed collision of 2 black holes. If the time would just stoped to infinite stretch, we would never be able to observe merge. Imagine 2 objects that slows down time. They should interact each other to the power of 4 when they almost touching each other. How would be possible to observe merge? To experiment this, is enough if we would observe time changes on 2 big asteroids, that about to crash on each other. When they are away, from each other, we should measure the time differences between empty space and time on asteroid’s surface. In addition mass of the asteroids. Then we should measure the time, where they are very close to each other, and just before and on the crash. The figures should allow us to to precise calculate the finite time on point to entering black hole. It is very simple. Black hole mass divide by asteroid mass. The results will shows multiplication of how much time will slow down. However no matter what number we place there, it would never be infinite slow. Please consider this and answer / correct me if I am wrong and why.

NEED MICS!

If the information that collapsed into the black hole gets encoded in the hawking radiation then in what form. The hawking radiation seems like it would simple but the information of the book is encoded in it presumably not in the form of a book. That seems a crux question.

He has the best teeth.. ever! :}

The point is so small at the singularity that it would take an eternity to reach the center because you will constantly orbit that point. It would take billions of years to reach the center, but if we send a probe with Einstein's spooky physics at a distance as our communicator then you have a quantum communicator and it is rooted in the entanglement of particles that are radioactive, With a phenomenon faster than light, to escape the pull of gravity of the event horizon of a black hole in spacetime. we should be able to see the moments before it hits the event horizon and maybe be able to send data back faster than the speed of light breaking the pull of gravity. Nothing should be impossible when dealing with just a big ball of gravity. It might be possible to orbit black holes so fast we go forward or back in time. It is mind-boggling until you see the relationship between Einstein's theory of relativity and Hawking's radiation. Just remember we have Americium in the periodic table.

How complicated explained, just to describe a sinkhole... 😅 ❤

GO IIIIINTO THAT 🤣