What Exactly Are Black Holes?
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- Опубликовано: 12 июн 2018
- Truly understanding black holes requires the curved space-time of general relativity.
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I'm a teacher myself and I watched all the other channels from PBS, Veritasium, Physics Girl, Minute Physics and so on. I tell you honestly that you have a unique way of explaining difficult topics - because of the way you analyse the stuff for yourself. Please keep up your work! There is no other channel with this kind of quality of explanation.
Wow. Same subs.
Couldn't have said it any better. Nick can explain things in such a great and understandable way, for the people.
Some teachers just repeat what they have been told, or what is written in the book. Great teachers question everything (just like kids) and adapt the explanation to the audience (thinking about the level of understanding the audience has in advance, to give them understandable explanation).
try isaac arthur, I prefer him since he is a lot more serious, though this channel is a fun way to learn
I agree
Agreed. I hope RUclips algorithm promotes this channel a lot more, it's fantastic and explained this concept about black holes in a way that I finally comprehended it after years of documentaries and RUclips explanations.
A black hole is a missing piece of space-time. Wow that's a powerful conclusion.
Exactly
i know, that one got me thinking too ahaha
Events that occur inside a black hole, will never happen to an outside observer, even in an infinite amount of time. 🤯
@@jonathanwilson7957 ok
@@Humgus_Manual 😂
I have no idea how I stumbled across this channel, but I never want to leave this asylum now.
We all drool over physics.
We are a crazy family now.
Same
Yeah this dude deserves way more subscribers
U probably found him by RUclips or from Neil Tyson on star talk or what not
Wow, the "missing piece from space-time" explanation was really enlightening :)
Horia Ioan it blew my mind!!
Quantum physics can do that, and it does quite often, shame it needs general relativity to create it.
Rest your mind, nothing is missing, you can't escape this universe for all the mass in it.
@@nadavdanieli but doesn't the universe lose information when anything pass the even horizon ?
@@nadavdanieli It's the events that occur inside the black hole that are missing. Those events will never occur to an outside observer, even across an infinite amount of time. So in a sense, it is a missing piece of space.
@@jonathanwilson7957 Do we know that any events are happening inside a black hole?
As an old guy who's read many science books and watched science shows on tv for decades now I can say that you're communication skills are superior to a lot of authors and hosts. Even just 7 minutes gave me a clearer view of what black "holes" are, without the hype and dramatics.
Comment #2: it's obvious that the way the universe works is SO complicated that the vast majority of people on this planet will NEVER EVER be able to understand it fully. That's kinda sad isn't it? That's where educators like yourself come in. And you're one of the best. I hope this comment doesn't swell you're ego too much Nick, wouldn't want your head to implode into a black ball!!!
Absolutely NO one ever has or ever will understand it fully.
JustKeith I wonder if our brains could get more powerful over time? Who knows? Maybe by the year 558,392 we'll be saying "yeah! I get it!"
Maybe. But I think that the universe is like Russian dolls. A universe within a universe... And each mystery solved will expose a new, harder mystery. As astronomy progresses, it exposes new mysteries like black holes and dark energy.
Maybe we can unravel the mysteries of black holes, neutron stars and/or gravity. We can observe it. There is evidence. It is here!! In theory it is possible. (I hope)
We cannot unravel the origin of the universe. There is no evidence of time and space before time and space. This will always be a mystery.
@Benito Mussolini Actually I shouldn't have made it look like I'm a big reader, I'm not. I haven't even read a book in years! Too busy. But so far my favorite one is The Elegant Universe by Brian Greene. He's got some good stuff on RUclips too, check it out!
"A black hole is a missing piece of space-time". Absolutely amazing. Simply brilliant. I can't get over the beauty and simplicity of that line. Nick for president!
This is the best science channel..
Tushar Sharma PBS Space Time is also good.
Easy the best Chanel and the Best "RUclipsr".
You can see Nick's the "energy" being spend in quality and not industrial volumes of nonsense just to make money.
Nick seems to be a idealistic teacher, without vanity and only worried about give information to Us mortals (Like Prometeus)
Is like a guy You can imagine as that friendly teacher...
Beyond The Imaginary Icewall Ofcourse PBS Space time is a good channel.
Fernando Davillar You are absolutely right...
I feel this is the best, if PBS Space Time is into this discussion, then Kurzegrat-In a Nutshell should also be discussed.
1:27
I love that ‘wuum’ sound.
Thank you for concisely addressing the misnomer, "black hole". Your explanation of the spherical nature\character of a black hole is delightfully refreshing. Thank You
It is!
I KNOW they're not actually holes, but I often imagine them that way anyway because of years of bombardment with misleading artists' conceptions. It's really annoying, and I have to catch myself, because a hole just doesn't represent what they are at all.
The Science Asylum: 78K subscribers.
Dr. Phil: 2.5 million subscribers.
This should be the more popular asylum.
This was a nice summary of why Black holes are so exotic in General relativity.
To me, the expression "a missing piece of the Universe" is much scarier than the word "Black hole". I'm like, where is that piece of the puzzle gone?
It makes the perfectionist in me very angsty. :)
these videos are great. they remind me why I study physics. sometimes it seems like all I do is math
Math is the root of all evil.
When you begin to believe your math dictates how the universe will be instead of understanding the universe and find the math for it, all is heading south.
The earth was flat once, books said it, even god himself said so.
Don't trust what's in the book to be true, ask questions when ever there is s doubt.
I envy you. I'm practically dying to study physics but am unable to atm :(
I didn't go to college, but I educate myself on subjects we're not really taught to me in high school. I'll never use any of the information I learn in the real world other than talking with friends about cool stuff like time dilation. It also helps in talking with Bible believers, I find most of their problems are understanding the enormous scales and what's possible in them when talking about many millions and millions of years with evolution and the formation of the earth. Explaining how things came to be that to them seem suited to us as a species. It's hard to take sometimes, the way so many just hide their heads in the sand at facts that correctly challenge the incorrect view of reality.j
Chris Waugh
You are in good company, the universe did not go to college either, it is educating itself and seems it is quite good at it, even if to us it seems it is a slow learner.
Even what you call knowledge is a belief. You believe black holes exist, I believe they don't. No one ever saw one up close and study it enough to conclude it is a black hole, so far all evidence show it is not so black as we think.
What once was knowledge is belief today.
We will never know the true nature of reality, even if we evolve to see more and further in time if we depend on matter for our existence.
Whether one know, believe, or even think, makes no difference, we are all part of this learning process and contribute to it in different ways.
Yo, Chike, math doesn't dictate, it describes properties of the universe, in ways we can use to improve our lives. By the way, books also say that a Count named Dracula was a vampire that lives eternally, do you believe that also? after all, a book said such. As for asking questions, that is exactly what scientific experimentation is. When math can predict precise results of experiments and observations, it is most likely the math is correct. BTW, did your "god" tell you personally the Earth was flat, or did you read it in a book? If such an omnipotent being exists, it doesn't need bibles, preachers, or churches in order to communicate with you directly.
4:37 : What a mind blower thought that hadn't been made clear to me before! "Once the event horizon forms, none of the 'now' that happens inside of it will ever be a part of our 'now'...incredible!
Best introduction on black holes. Hands down !!!
l
This is a phenomenal explanation fit into 7 minutes. Well done! Makes the event horizon easy to comprehend. Also the explanation of a hole in space-time rather than a physical hole helps to conceptualize the concept. Kudos!
Your videos have always been very good. But lately you have been rising to an even higher level. Really well done!
Thank you for making these fantastic videos.
“The Black Hole Is A Missing Piece Of Spacetime”.
👍🏻😎👍🏻
no its an entitiy so massive it lost magnitude.
Black space balls!
Btw I love your videos... always learn new things thanks to you... things that make me crazy about physics...☺
"A black hole is a missing piece of space time." I like this definition.
This is not a definition
2:35 Black holes don't suck, it's pretty cool
Dude... great videos... I love the way you get rid of false images most of science uses to try and explain stuff, you prove reality needs no untrue images to be explained
One of the best explanations of a Black Hole
Thank You Nick Lucid and all who bring your videos here. Bravo!
Black balls in space!!!😂😂😂😂
May The Schwartz be with you.
Pee is stored in the event horizon
Profound, ' a missing piece of space/time'. Again a very interesting perspective that is absolutely correct.
I won't even bother listing, I like everything about this channel!
You are absolutely the first person I’ve ever heard state a black hole is a sphere and is not a hole, I truly want to thank you @thescienceasylum!
I miss Nerd Clone 💖
Don't worry. He makes an appearance in the next video :-)
@@ScienceAsylum My question is if the black holes separates matter from the rest of the universe forever what about the information inside it because we all know that information cannot be created nor destroyed. So what happens to the information inside the black hole because hawking radiation is kinda draining the information inside the black hole. So where does it goes?
Me tooo
Awesome video Nick! I feel a little bit more crazy now, so thanks! :)
as usual, the best explanation in the whole web
Hello,
As always I loved your video. Your explanations are amazing. I'm really interested in rotating black holes but it's hard to find a simplified source like you on it so I hope when you do make a video on them, it's a long video with as much information as possible. Not trying to put pressure, just being excitedly curious lol. Keep up the good work :)
And thank you.
For a sneak peak, rotating BH actually has two event horizons. Inside the inner event horizon, the BH is repulsive and stable orbits are possible. Yep that's right, stable orbits inside the black hole!
Francis Pham damn I love astrophysics. Thanks for the information :)
And here I thought Black Holes couldn't be more terrifying.
You proved me wrong!
Never thought of them as removed from our time. A disturbing thought.
Why is that disturbing? There's a whole bunch of time behind you in your past cone that is for ever inaccessible to you, but that doesn't disturb you, I guess.
That is what we can call a science channel. Others are fake science. Lots of questions had been solved to me. Keep the good work
It's not fake science but they are sitting in an ivory tower, how we call it in German. I think they're actively confusing so that not everyone can grasp the "simplicity" behind their concepts. I put it in quotation marks because these are still complicated topics. I believe some do it intentionally and others are so deep in their topic they can't explain it in a simple way anymore.
I’m starting to get the feel of this channel, and I have to say this is great stuff. Thankyou.
Very well done. So many other videos on black holes on RUclips, but this the first time I had the meaning of "event horizon" described that way before.
Subscribed
Love this kind of vids
OK. Now one video with Spinning black holes?
P.S. Awesome Video!
Excellent video. Complex enough to be interesting, but explained well enough that I can understand it. You're videos are the best.
The same thoughts I am having as every comments in ur videos. So awesome never thought in this way.
Black Balls in space wins hands down!
Black balls,Lmfao. Nice video though!
Perfect timing! PBSSpacetime made a video on black holes 2 hours from now...
That us the best and easiest to understand black hole explanation I've heard yet. You make it fun to learn.
Amazing explanation, you are truly the best RUclipsr currently living cuz no one explains how and why, they only tell what. And please check this out:-
If gravity curves spacetime and we move in that curved spacetime, then what gives us the kinetic energy to move. For example falling towards the Earth
mind=blown great video keep up the good work
Very informative. Thank you !
I love how you brought us to that simple summarization of what a black hole is.
Perfext way to make it easily understandable.
Why I discovered this channel so late..... This is mind blowing....
Hi Nick,
Did you read new Mihalis Dafermos and Jonathan Luk's work? So my question is Penrose Diagram still relevant with this "lack of smoothness for rules of physics"? If it's not, how black holes have "really" seperated space-time from ours? Can we save information inside of Cauchy Horizon?
BTW thanks for these great videos again.
Yes penrose diagrams uptil a certain point is valid but we cant go beyond a certain limit (#will lead to infinities ) for eg penrose diagrams can help us debunk or crack the myth behind null geodesic convergence or it provides multiple universe theory but u can not get close to the sphere inside of it
Answer to second question is that black holes are so massive that they can bend time itself it separates itself from the rest of the universe due to einsteins theory of general relativity so if u are next to a black hole by only the boundary of schwartzild radius time will pass by so quick u will end up time travelling to the future SO ITS A NATURAL TIME MACHINE
Answer to third question black holes are great at saving information even quantum data even tho u might end up dying in a black hole ur information still remains so u can save up all the catchy information in a black hole but u can't transmit it u can't send it back it will not make it outside the event horizon the information is trapped ,(noethers theorem to the maximum limit )
I'm at work and.... well, I love you guys!🤗🤗🤗
What a great definition "A black hole is a missing piece of space time forever separated from the universe"
As each video i watch on these extremely weird things, the more i kind of grasp what they are. As i clicked on your video the voice in my head said "here we go, another one to repeat something i dont get". I think a combination of all the videos i have watched has lead me to understand them quite well now but your intermittent use of words and visuals in this one helped me visualise them as a sphere even though we cannot actually perceive them that way (a black circle from every direction). Thank you also for your explanation on what happens at the "core" level and the photon sphere when it implodes on itself, i never knew that and so can get now what the "horizon" actually is. My brain does struggle to wrap itself round the separation of time from everything in the universe although the boat on the water (showing the hidden horizon) helped a lot. Either way, whether i fully understand it or not, my brain can kind of visualise what happens now to a star when its solar mass is so huge and gravity takes it beyond a Neutron state. Thank you ever so much for your informative videos, i continue to learn so much from you!
Glad I could help 🤓
awesome job. I watch with my two young boys. they love it too. thanks
That's so great to hear!
I like that you put vsauce music at the end
One of the best video's about black holes I've seen. Thanks!
I love that "turn to black hole" sound effect.
Missing piece of spacetime. Wonderful
In my space-time I was first!
this is the first explanation that i actually fully understand and i watched a lot of other channels content, thank you for sharing your knowledge
Awesome. You always show a different and easy to understand explanation.
haha i really like when u are funny, this Black Balls was hilarious ! :D
Thank you! Since i was a kid I hated the term black hole because it made no sense to my intuition. Black ball confirms it. Thank you!
A hole in a 2d sheet of paper is a circle, a hole in a 3d space is a sphere. A black hole isnt really an object but yeah a boundary of spacetime falling into itself, a hole is more accurate I think.
Therein lies the question, Theo. Is a Black Hole really a hole or just an extremely dense core of nothingness? This is the one question that man may never be able to answer. What happens beyond the event horizon?
As always Nick, spectacular video! I learned something today! Yay!
Of all the great mysteries in outer space this very topic has ALWAYS intrigued me to all hell n back 🤣. Just the thought of what lies beyond the event horizon is so paradoxing. Awesome vid here my dude 👏👌.
Notification SQUAD!
How do we know far away galaxies aren’t made out of antiprotons and prositrons
Stuff should work out the same way or just the electrical charges would be swapped
(I know that not every particle is electrically symmetric but the exception are quite minor,are they?)
From observing them, there's no way to tell... but we do know that, a long time ago, all the matter in the universe was a lot closer together. Based on our models, the antimatter should have annihilated with regular matter before it separated... and, for whatever reason, there was an excess of regular matter.
Maybe a broken symmetry?
But after eh the anahilation there should be a lot of energy
And if they were quite evenly
distributed the energy should be so to.
And if there is energy new particals will emerge,will they?
”Normal“ and anti.
And if this happens very often,they could sort themselves (asuming they would be just quite evenly distributed)
Or they don‘t but this circle could bring the to types of mass into an later era
Were they wouldn‘t meet
But I think that is just a nice thought because something like this would be messurable in the cosmic backround radiarion ,or?
very specific light would we see that we do not see
*_Explanation quality is unbeatable ... More soft, and more easy😊_*
"A missing piece in space time" you put it in a way ive never heard before
Sometimes I Feel like a black hole...Missing a piece of my space-time.
Consider this reply an observation of your existence :-)
both statements are different.. they're opposite meaning..
- a missing piece of space time
- missing a piece of space time
5:35 "A piece of the universe that is missing"? *But information can't be lost* , that "piece" must be there, somehow.
There's ongoing debates on whether black holes destroy information.
Plus, just because it's separated from the universe, it doesn't means it's gone. It still exists. It's just not a part of our universe anymore.
But if it is not part of our universe, why it still exerts a gravitational force?, Something is "not in our universe" should not be affecting/interacting with it
So what about Hawking radiation? Does that return the lost piece back to the universe?
I think that just creates a new information, probably unrelated to the originally lost one, because it originates from a random quantum fluctuation, right?
This is hands down the best, most precise, most concise explanation, of what a black hole is. Kudos to you sir.
1:35
SOOOO glad you pointed that out.
I've always hated that graphic depiction.
New subscriber.
Great videos!
Why do stars twinkly?
Atmospheric disturbances and refraction
“It’s so black you can’t even tell it’s 3 dimensional”
I 💙 how simply u explain
By using space time graph....
Great video as always! Actually made sense and better wrapped my head around it! Also scary to see a map with my city on it explaining black holes.... What experiments are you doing and should I be worried and move?!?
No humans were harmed in the marking of this video. I took proper precautions :-)
Yeah... It's ok to be little crazy... 😁
I am attracted to your videos... I think you created a pseudo Black Hole in you tube.
Hahah Good One, Friend!
Although I think the channel is more for "Supernova" than "Black Hole"! As It spreads knowledge far, far away... Changing minds abroad the world.
Except we won't miss any space-time events :)
_Thank you_ for not using the tropey "not even light can escape".
Your event-based explanation, combined with the flow of _time_ inward, so that whatever lies beyond the event horizon is in the _future_ rather than in a direction, gives a much better impression, and, I _hope,_ some deeper intuition for lay-people.
From the comments... I'd say it has, at that. ;)
the best best best explanation of blackholes I have ever seeen in youtube..
Nick, your comment about the event horizon and "Everything inside it is immediately separated from the rest of the universe" (5:14) sounds very close to "The Black Hole War" between Leonard Susskind and Stephen Hawking. Hawking proclaimed that all information inside a black hole was lost forever even after evaporation. That doesn't sound much different than your statement. Leonard Susskind went so crazy over this that he wrote a book about it and made Hawking retract his statement.
Nothing can be lost from our Universe. Every single quark that came out of the big bang is still with us in one way or another either in the form of matter or energy. Hawking argued that all information in a black hole was forever lost. That was odd since he discovered the radiation named after himself. Dr. Susskind was able to use Hawking's own math to prove that nothing in our universe can ever be destroyed, even if it tries to hide inside a black hole. It is still with us. It can hide but it can not leave.
You have a little wiggle room here because you can argue that you did not mean that "Everything inside it is immediately (lost) because you said "separated", but that choice of a word can be very misleading, even though unintentional.
Anyway, I wouldn't be able to even think of arguing this stuff if I never followed scholars like you in the first place. Thanks
Wouldn't a black hole not be black - because they bend light around them and you'd just see that light?
You wouldn't see that light if the light can't get away...
The Science Asylum, but wouldn't some light bend around it and hit your eyes it the same spot as light that's not escaping? In otherwords, if im looking at the center of the black hole, im not going to see light coming from that direction, but I might see light that came from behind the black hole, didn't quite hit the horizon but was bent enought to hit my retina in the same spot that light coming directly from the center would have. I wish there was a way to post a diagram. I guess what im asking is a black hole might not appear black depending upon the viewing position because of the bending of light coming around it - kind of like gravitational lensing.
What's even more interesting is that when you get closer into the orbiting light, you will see a lot of random light that may have been orbiting there for a while, or just newly created one. Like you can see the back of your own head potentially.
then how do you know that light does orbit
that is why i flew right into it
I have one, and I haven't found any similar yet: 3:06 "You're about to notice is sphere of orbiting light" - very clever usage of words: "notice", not "see". When hearing "orbiting light" one might think of glowing orb. But if the orb glows it means the light is moving out of it to the observer. This light circles forever in closed space. It won't glow. It won't be seen. I think at least. :-)
Kudos. A time worn subject that YOU are able to provide a fresh (and accurate) spin on. Cheers!
"All events in it's horizon are forever separated from the universe". Will Hawking radiation, not eventually cause the black hole to waste away making it part of the rest of space time again?
This is the best way to explain things. Thanks Sir. I love this.
Nice job Mr Lucid!( Or Dr?) Once again you have nailed it
So excellent, thanks for all your work on that channel...
This is the best explanation and most easier to understand. However terrifying. Great video man!
Glad you liked it 🤓
Sir you are the best. Thank you for your dedication to science, a huge massive respect to you from India.
You have very good knowledge and explaining skills. Your video skills are excellent. Please never stop making videos. You are best channel I found in 20 Years of life.
I almost spit out my cereal when heard the sound a neutron star makes when it turns into a black hole, thanks!
😂
Sorry Nick, I had some trouble with my credit card and had to get a replacement. It's taking a long time for it to arrive and the Patreon contributions I had setup for June haven't gone through yet because of it. As soon as I can though I'll get that sent for you. I love science and I really enjoy how you present these topics, I'm happy to contribute at the level I do.
Keep up the great work!
It's OK. It happens. Is this Kevin?
Yes sir, we'll have that sorted out hopefully tomorrow. If you can believe it I'm waiting on a PIN for the new card via snail-mail of all things.
Please make more videos!!! I see you haven’t made any lately; everyone’s comments just yells out how well you explain things! Might I add that these videos are fun, they keep your attention & don’t throw you off or make your brain fry! I hope all is well in your life, many blessings to you! Hope to see another video soon on my notifications.
I've been consistently making 2 videos per month. That's the best I can do working by myself.
Awesome love the channel thank you you explained it in the much easier to understand way
Awesome Video. Thanks for making it
Exactly, I've always thought of black holes as missing pieces of space-time, and I've always wondered what they would have in common with the other boundaries of the universe, finite or infinite.
Best explanation of Black Holes! Thanks so much :)
I've seen and read all the stuff on Black holes. This is the first time anyone has explained it properly, well done. No singularity just comman sense. OK we can't know what goes on in a black hole bug using the starting point of a neutron star is, to me, the most likely explanation of the process especially for stellar black holes. The event horizon is just a curtain formed by gravity.
Now what happens inside a super massive black hole might give us a clue about dark matter.
Great video from someone who thinks.
Neatly explained. Kudos!