Black Holes can SPIN?!?
ฝัง
- เผยแพร่เมื่อ 10 มิ.ย. 2024
- Most sources talk about Schwarzschild black holes, but those don't spin. Most are what we call Kerr black holes, or rotating black holes, surrounded by a region called an ergosphere. The spacetime around them is not only stretched, but also twisted, leading to some strange phenomena.
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my favorite speed is officially: "FAST FAST!!!!!!"
You must be german!
FAST FAST!!!!!! Is how fast I click the like button on one of these videos.
It's weird how just repeating one word makes you go. Wow.
Trying to understand black holes is hard, but rotating black holes really make my head spin.
Ahaha good one, Therion-sama.
@@feynstein1004 Thanks my friend ^_^
@Master Therion You're welcome :)
Ha!
@The Science Asylum Ahaha hey man. Waiting for your reply on my comment :P
Mass, charge and angular momentum. I've always been struck by this similarity between black holes and elementary particles.
Woah.
Blackholes likely are only elementary particles due to the extreme environments inside them
Indeed. If we could just drop the assumption of being in a special place (referring to scale)...
Hmm interesting. Is there more to this or is it anecdotal? Nature always impresses us with its scaled similarities. Waves in a pond, vs EM waves, gravity waves, etc.
@@alexpearson8481 I mean these singularities are to be expected, its the same universe after all
You and CGP Grey are the only channels I click like before watch. Because I know it will be good no matter what.
do check out excurb1a too.
"I'm not an experimentalist" said while wearing a lab coat for every video.
Sorry, I can't resist pointing that one out XD
It helps me maintain my authority over my clones.
www.kevinmd.com/blog/2016/12/doctors-white-coat-really-mean.html
XD
@@ScienceAsylum i have a question. if force exerted on a mass is some form of wierd curvature of spacetime. does charge also bend spacetime to exert force.
he works in an asylum, duh...
"Conservation of energy shall not be vio-lat-ed!". I had to pause and rewind three times through this because I'm laughing.
Great entertaining learning experience, as always.
*You get a spin, and you get a spin, and everybody gets a spin* Oprah intesifies
u spin me right round baby right round like a record baby right round round round
I didn't watched this video yet. I opened it thinking that it will be another part about magnetism. I highly value the magnetism videos, because they have different point of view, but on the same time I felt a little bored. I'm watching physics related videos for over a year. All of Science Asylum (multiple time) PBS Space Time, Crash course (Astronomy, Chemistry), David Butler, Periodic Videos, The Royal Institute, Sixty Symbols, Anton Petrov, Fermilab, Dr. Becky, DeepSkyVideos. Everybody always says: for non rotating black hole, in case of uncharged non rotating black hole. I even see Matt O'Dowd (from PBSSpaceTime) standing in front of me saying: "for uncharged non rotating black hole". Nick, you nailed the subject!
If most black holes rotate, then we should be spending most of our time talking about _them._
@@ScienceAsylum Yes, but physicists always start by talking about a spherical cow!
Now I need a hawking radiation video from u
Hear hear!
Hear hear!
RIP Hawking
I agree
THIS
I love this guy so much ,he helps me understand science and physics unlike the other science youtubers .
And what i love is that he makes it fun and adds in jokes into the video
AND WHAT I LOVE THE MOST ARE THE RULES THAT HE MADE ESPECIALLY THE ONE WHERE U GOTTA QUESTION EVERYTHING AND GO DEEP INTO DETAIL !!! ❤️
My cousin said he read an article about this "way" to bypass conservation of energy.
A bus hit my cousin.
I lost my Bus driving license.
Humanity thanks you for your great sacrifice. Your bus license will be missed
You still deserve to be thanked.
you have done this for humanity. just if you are then don't feel guilty about you are a hero
Noone At all you can actually bypass conservation of energy. Read about Noether Theorem on Conservation of energy. Also, in antimatter annihilation energy is lost. In dark energy, energy is being created. Here is a link to where you can learn more. I’m not sure if you know this yet, but almost everything in classical physics isn’t completely correct. In the 20th century, classical physics was replaced with quantum physics and relativity. Which still remains today.
Noone At all th-cam.com/video/GHCc9b2phn0/w-d-xo.html
This guy is the best nerd teacher IMO.
Nick is Bill Nye Level of fun science.
The feeling when everything in "interstellar" makes sense 😮
That "ERGOSPHERE"...
Because Christopher nolan wanted to make a scientifically accurate movie. He got a theoretical physicist and talked to him for several weeks to see what should he do. For example what shape should a blackhole have ( a sphere, which is correct ). The lensing of light around a blackhole and other things. The formulae written on that chalkboard on the movie are the *actual formulae for blackholes* not some random physics formulae. The spacesuits are *real suits* . The scenery was *real* and not green screen.
If you see behind the scenes you will be mindblown. ( spoiler alert, he didn't use much special effects with computer. )
Nolan is a genius.
@@shayanmoosavi9139 It's actually only accurate about the space-time "stuff". I'm an Environmental Scientist and found some stuff let's say - irritating. And the behaviour of the protagonists made not every time sense. But I still love the movie and the music is great in combination with the pictures. And I really didn't mind the length of the movie and was sad when it was over.
@@MsSonali1980 agreed :)
of course it wasn't 100% accurate. It's extremely difficult to make a 100% accurate movie if not impossible but he did a great job. He has great relationships with the actors and it's a characteristic of a great director. I absolutely loved interstellar and I'm planning on watching his new movie Dunkirk as well.
@@shayanmoosavi9139 Not mentioning the accuracy of entering into the BH.
And that he survived, and that he traveled back in time.
So, too much accuracies made me think about studying astrophysics from movies.
But it's an OK sci-fi movie!
@@veronicagorosito187 I already said it's not 100% accurate. It's extremely difficult (if not impossible) to make a 100% accurate movie. nobody knows what happens when we enter the singularity because the laws of physics fail. there's simply not enough data to conclude what happens there so it's perfectly ok for sci-fi artists to let their imagination guide them.
there's nothing wrong with having an active imagination. Today we have technologies which have been considered Sci-fi and impossible before. Who would have thought some day we'll have smartphones with touch-screens which stores 256GB of information on a very tiny hard-drive? Who would have thought that VR games can be a reality?
3:38 : Great animation. I had to pause and ponder if that could actually be possible and under what conditions. Awesome way to explain things. I did say "Wow" there. :) Great job Nick
Using the blackhole's energy reminds me of that scene from Interstellar
love that movie! and I was thinking the same thing
You have to leave something behind ... now I get it !
yeah..even i recalled that point
therealnightwriter how can you say that
therealnightwriter We have a flat earther in our midst
Amazing.
Can the nerd guy have his own episode?
Fastfast
Can the spinning one have his own episode? :D
Please don't, its already hard to understand what he said. Maybe with subtitle.
Yes! AcTuAlLy I love him :D but I think it's a little bit spit-y around his perimeter :DD
Awesome video. Keep up the good work Nick!
Yes, black holes _can_ spin. Or can they?
_plays VSauce music_
Star dust vsauce would use a ringularity for a ring
and then realise a ringularity doesn't exist and then tries to debate with himself whether it exists or not
Are you trying to become next Justin.Y?
Lol
michael sitting on a toilet:
"Get out, Im taking a shit!"
"Or am I?" *smears camera with brown material*
You have the same comment on literally ever video
The look at the camera before the "Fast-Fast" officially slayed me.
And again you broadened my horizon, always a joyfull and interesting event when that happens. Thank you and keep spinning out more crazy stuff!
Great video Nick! I remembered a Kurzgesagt video about harnessing the rotational energy like you said at the end, that is crazy!
Finally! I've never found anyone or anything that could make rotating black holes make sense until now. Great job!
DCUO COVEN If it was possible, which it isn't.
Love the way you make me laugh along the way to understanding.
The comedy keeps me from getting dizzy.
This is such a great explanation for a problem I never thought about before!
Yeah today is the real valentine day for my love for science
Excellent quick description of black holes from outside the event horizon. Black holes are a topic that I’ve spent months personally researching. The inside is where things get really weird, they don’t have an inside in a spatial sense.
They don't? I thought you get always closer and closer to the singularity, so that sounds like change in position...
Luke, time and space switch signs inside the horizon, so they switch behaviors. The singularity isn't a place in space, but an inevitable future in time.
@@haulin
The singularity is a point in future time, not a point in space. Getting always closer to the singularity is a forward change in your time position coordinate, not a forward change in your spatial position coordinate. Black holes are time prisons. There is one escape, as Hawking radiation, billions of years later in outside time, minutes to days later by a clock you carry with you. I said they are really weird inside.
Edit: Nick beat me to a reply. Happily we agree.
again guys, its the most underrated channel.. please do show your support and make the science win . see, i don't know the host in person, nor do i have any links with the channel but people like this always cheer me up to do science. it was the first youtube channel about science that i ever watched and since then, i am motivated and passionate for the same.the way he explains the things , so simply is truly an art worth appreciation.
thanks science asylum
I actually understand the physics you talk. It is so refreshing!👍🚀
Honestly, my favorite science channel. Thank you for verifying my belief that nothing can have infinite density, you probably learn this as a physicist, but I have not read about it not being true in anything I have read
When a physics formula generates an infinity, you have come across either: 1) an impossibility or 2) a situation where the math breaks down and no longer accurately describes reality.
Hahaha
Just found this channel, loved your charisma. New subscriber!
It took 2.06 minutes to go from "cogito, ergo sum" to "conservation laws, ergosphere"
Been waiting for someone to tackle rotating black holes for a while, pleased it was Nick
And they are also ergonomically correct! 😀
Great video again! Never heard of this ergosphere. Fascinating.
2:06 😂👍.
I always wondered why non rotating black holes were a thing. No matter how much you learn there's always things about the universe that will blow your mind away.
2:02, 2:49, 6:03 - lol. 😁
Nice to hear a scientist acknowledge that we don't think there's *actually* a singularity inside; it's where the math breaks down. (Assuming I understood correctly.) I've thought that for a while.
That isn't what he said at all.
From the perspective of the outside Universe, the physical blackhole is literally a pinpoint in space. Only the event horizon has physical dimension, like a wierd atmosphere on a very weird planet. From the frame of the blackhole? That is where theoretical and sci-fi speculation comes in.
@@jamestheotherone742 0:56.
@@ratamacue0320 Go read up on general relativity. Then read my post again.
@@jamestheotherone742 are you claiming that I've misrepresented Nick, or are you claiming that Nick misrepresented scientific consensus?
@@ratamacue0320 Its likely that you misunderstand scientific consensus as well as misunderstood the content of the video.
Man you needs to be noticed i hope you grow very fast
Spot on as usual!!
Keep the good content NICK!
I'm a simple guy, when Nick uploads, I view, comment, like and share
“Super duper awesome” love watching these with my kid, always great content, thank you
dude... you are awesome. always enlightening...
thnx
Angular momentum is such a crazy thing to calculate.
Nice. Although I'm not a physicist, my father is, and we have gotten into lengthy discussions about rotating black holes and some of the wilder speculations about them. The escape by releasing mass thing is new to me, though. It seems like, if there's an accretion disc, you would be subject to all kinds of radiation and such, though. Am I right on that, or all wet? Cool channel, BTW. I have subscribed and rung the bell. You're a hoot!
You are correct that you don't really want to be anywhere near a black hole's accretion disk.
Thank you for the explanation,i understand now 👍👍
Your channel is great
My neighbors called police because i was loudly watching the science asylum
.
The police arrested them.
Did the cops chill with you after and binge?
Do you live in Soviet Russia?
@@drew8443 yes, he is captain of the concrete put team in Vladivostok. Very well known there for sustained belching.
🤨
I live in the same Michigan town as Nick. Our local police only give out warnings unless they clock you going FAST-FAST.
So... Why does the act of spinning reduce the event horizon? If I spin does my gravitational field get smaller?
If you spin very fast, your gravitational field will twist and squeeze in around you making your outer edge squeeze in a bit too, but your matter will fly apart first. Black holes can take it further because they have no matter to fly apart, they are just a spinning gravitational field around an empty patch of space.
It doesn't weaken gravity. The trick is to realise that in general relativity gravity isn't a simple force. Let's comapre it to newtonian gravity. Every point in space 3 numbers can describe the gravitational force. In relativity, the metric tensor describes gravity, and it has 10 different components. Gravity in general relativity does more than attract. It does all konds of weired things, like explained in this video. You can't describe the strength of a gravitational field by the radius of it's event horizon. That's the trick.
Great video!
Dude, usualy i satay out of topic coments because, generaly, my english doesn't keep up with a mor informal way os talk but, man. ia have to stop to say that, aside the great information, you puns are awesome. Some day i'll be in you patreon rank. Until ther, gonna keep working. Nice job, dude, thanks for the content.
Thanks! It's always nice to read appreciative comments :-)
More discussion about ergosphere other than black hole dragging space time with it? Maybe with help of diagram?
Inside the ergosphere, the time component switches sign, so it behaves more like space. You won't be able to stay in one place anymore than you can stay at one point in time.
@@ScienceAsylum What happens with the space components? I've heard people saying before that beyond the event horizon time and space switch roles. Kind of difficult to picture that. Didn't even hear about the ergosphere until today, so thanks for talking about that.
@@ScienceAsylum Okay, but I'm having trouble imagining the time switches sign so it behaves more like space
Luke, the space components don't switch sign until inside the event horizon, so we don't have to worry about that in the ergosphere... thankfully.
@@ScienceAsylum Speak for yourself, I've been twenty one for ten years now.
FAST FAST!! 2:51 ...great videos as always!!
You makes me happy and sometime brings laud laughter especially when you say fastfast🤣🤣🤣👏👏
fastfast
another amazing video as always!
can we talk more about the ringularity and how it's even possible
btw best science channel next to vsauce
As said in this video, singularity and ringularity is not possible. They are only math outcomes.
And for the math approach - singularity is a point, and point has no dimensions. Therefore you can't describe the spin of a point, assigning some spin to a point is... pointless? The simplest "thing" that could have some meaningful spin is a flat, two-dimensional ring, so it became our concept for a spinning singularity.
@@BluesyBor Although a point can't have spin, it can have angular moment can't it? Such as an electron?
Shpagel TheDuck Can a ringularity be called a donut hole?
Seriously though, I wonder what would be in the hole. Wasn’t this part of a time travel theory also involving wormholes?
@@minties01 ok, but one thing here - electron is not a point, it was experimentally proven it's a very fine sphere, wasn't it? Albeit so small that's it just barely making sense, so it's convenient to treat it as a point in many cases. Second thing is that electron spin is quantum feature, while rotation of a black hole (or singularity) is a classical thing (it's used in general relativity which is classical), even if singularity is so small it surely has to deal with quantum physics. We just don't know how yet.
In case of a point, with spatial dimensions of 0, classical physics simply can't describe it's rotation or angular momentum. It just lacks features to differentiate the rotation around different axes, while the flat ring is the minimal figure that can actually support this idea.
But then again, as we could experimentally measure the spherical shape of an electron, we can only guess and imagine what really exists behind the event horizon. So all of that is just mathematical representation of what we think exists there, and everyone would be happy if this madness we came up with could be confirmed to not actually be true. ;)
I am an optimist. I believe that humans will colonize all galaxies until the very end
Me too.
@@ScienceAsylum Except that the very end in near. Big rip of the universe is expected in 1 billion to 1 trillion years as latest indications are that the dark energy pro volumina is not a constant, but increases slightly as well.
what a curse on all galaxies that is.... well, given the state of mind of most humans, infecting all galaxies would be a more accurate description.
Agent Smith said, Like a virus but then Neo joined the One named Smith and the Yin and Yang were back in balance in a new evolution of cooperation like the mitochondria joining our cells.
I think the thing that is stopping civilizations from colonizing the cosmos is the fact the we (and presumably other (our-kind)intelligent civilizations) save the weak eventually corrupting our DNA with all the defects that natural selection would have gotten rid of.
not saying close all the hospitals... just saying, you know?
I like your crazy vibe. The time dilation of using the ergosphere would cause some weird effects for sure. "I'm going to get some energy honey, see you in a hundred million years."
Seriously.
the best channel of youtube! I'am braziliam and love you
At 3:10 you said that black holes absorbs angular momentum of the stuff or star that they eat ? How angular momentum can increased by absorbing or eating a stuff which already have it ....?!
@Anurag Juyal Not the best example but good attempt
Oh yes conservation of momentum
Thankxx
Does all black holes spin as they are made from rotating or spinning stars ?
Yep! As long as the star that made it was spinning (which is _very_ likely), then the black hole will be spinning too.
@@ScienceAsylum So like almost all black holes are spinning?
You are awosome these videos are really really good thanks and if you send videos more regularly it would be better
Everything is in our hands: more financial support means more time to work on videos.
If I posted videos more often, they wouldn't be as good.
Friggin hilarious how you looked at the camera, zooming in roght before your catch phrase "FAST FAST!"
2:43 on right? it's event horizon, not something physical/tangible/matter , right? 2:51 that look... lol
Correct, the event horizon is just a "place" in spacetime.
@@ScienceAsylum It might be physical in the sense of turning you into a crispy critter when crossing it if the firewall thing really happens. Or has there been a well-accepted explanation for why that could not occur?
Yeah, that all depends on what a future model has to say about the matter/energy the black hole is made of.
1:27 if we don't ignore QM what happens??
Saswat Sarangi Hawking radiation
What Bob said.
i like the fact that many channelas as of 2062019 lately tend to focus on video explanation not just copy stuff like wikipedia..to tell u the info without good explanations..but to adapt ot the human brain
It shouldn't matter to me as much as it does, but I'm always happy when Nick and his clones are getting along.
You spin my head right round, right round
When you go down, when you go down down
You spin my head right round, right round
When you go down, when you go down down
I was thinking that too! 😀
fast fast
Hey Nick! Great work.. thank you..from where hv u gained all this knowledge?
Lots of research and working out math in the process... also, I wouldn't have understood any of it without my schooling in physics. I have a masters degree in physics.
Please my brain os still recovering from the last video my mind is blown twice now
I've realized there's a deep meta to your channel. That meta is you are teaching and speaking to all of your crazy clones, and that includes your viewers. But in the clone hierarchy only the question clone speaks for us. So it makes me wonder, which clone of you am i?
You've just explained some neat observation, that makes you the Nerd Clone.
O_O
I think I'm the dumb question clone... there is a dumb question clone isn't there?
@@deluxeassortment
There is now I guess! 😁
And there I thought the last time I'd see the Kerr metric written out was when I finished my bachelor's thesis. >_
thank you so much
Bravo once again
Universe does not use miles-per-hour for the speed of light. It uses kilometers..
The universe doesn't use _any_ units because *it doesn't do any math at all.* It just is.
got 'em
Owned
I sometimes wonder if the Universe is the result of math giving up on trying to define nothing and deciding to see what it could do with it or maybe nothing decided to see what it could do with Math. I think the Universe consists of two things, One is nothing the other Math but I don't think either are European. 🤔
@@ScienceAsylum Or do we use "natural units" where c is 1? Didn't you do that in another video, Nick? ; P
Fabulous! I wasn't aware of this feature of rotating blackholes.
Surfing the ergosphere is basically akin to getting a free energy ride. Daring and dashing stuff. :)
@@jitteryjet7525 True. No free lunch in the realm of Physics. :)
Good job!
Sir. You are fantastic
absolutely loved it
Educational and funny. "Its naaasty @ 4:26" Thanks for sharing!
Awesome channel
Thanks!
Thank you
That blinking star that you point out with the arrow, looks similier to a neutron/pulsar star.
That black hole is a strong radio source, probably from in-falling matter.
You're the Man!!!
4:25 "It's nausty" - Best part
Good lord 4:19 that metric of a rotating black hole, saw just a few seconds of screen time and was enough to give me a heart attack, diabetes, osteoporosis and back pain xΔ
Well, If Humans are ever able to harvest energy from black holes (and I don't mean those pesky miniscule gravitational waves...) the'll have to be so tecnologicaly advanced that they could easily create spacetime ships to travel to other universes and beyond... aka not... not very likely... :P
Awesome video as always Science Asylum!
Yeah... and the metric it's been simplified using GR units and some clever definitions (Schwarzschild radius and angular momentum). It's actually slightly nastier than it looks.
I’m not sure we could live long enough to interact with black holes or their ergospheres... I love your videos on black holes though... and your channel in general.
5k likes? really?! You deserve 500k at least! Continue the amazing work my idol! :D
Science asylum you are amazing.....i bet you will win noble award very soon........
Hey Great Video.
Please explain about Feynman's Atmospheric Electricity.
Thank You :)
I love it when you say FAST FAST !!
Gr8! I gathered the direction of your presentation but couldn't move along all the way. The physics-maths of BH is so complicated that my mind gets frame dragged 😄.
Bottom line: Reference frame itself gets contorted & we don't realize it; just as much as the magician's tricks. What you see is not what happens.
I was just watching Arvin Ash video and thinking about you. ♥️♥️♥️♥️
Great video Sir. I was watching the previous video about non rotating black holes and u said there are spinning photons spheres all around it. Does it happen outside the ergosphere in a spinning black hole?
Around spinning black holes, there aren't _as many_ stable orbits and the ones that are stable are _super weird_ ...but yes, photons can still orbit the black hole.
Good stuff.
@The Science Asylum Your videos are just awesome and of very good quality. I just have a question. Why the space-time get bent in the presence of mass or energy?
We don't know. We only know that it does and by how much and in what ways. We don't know why. Actually, "why?" is not a question that physics answers very often.
@@ScienceAsylum Thank you sir for the reply. But it is very easy to understand "how" it is working when we get to know "why" it is working.
Another question sir, when light passes through a denser medium comparative to air, does the speed of light really get slower or it just seems to us that light slows down but it maintains the same speed? what is the quantum approach?
Even though rotating black holes have a ringularity, that ring is infinitely small so it basically a singularity
Physical singularities are non-physical, not because it is "fun math, but can not be reality", but because there is no way to execute an experiment and find out (test hypothesis) what is going on "in a region" disconnected from our local space-time. The assertion (the hypothesis) that there is (or is not) a singularity in the center of a black hole is unscientific because the hypothesis is unfalsifiable.
ate que enfim legenda em portugues!muito obrigado
Pls a video on white holes too
0:50 "Unless something can be experimentally verified, you probably shouldn't call it science." Wow, that hits kinda hard in 2022.
BTW, this is my new favorite channel. I'm only scratching the surface but keep'em coming.
nice pet monster I used to run around breaking the chains