Black Hole Harmonics
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4 роки томуLearn more at www.brilliant.org/spacetime
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Black holes are crazy enough on their own - but crash two together and you end up with a roiling blob of inescapable space that vibrates like a beaten drum. And the rich harmonics of those vibrations, seen through gravitational waves, could hold the secrets to the nature of the fabric of spacetime itself. Today on space time journal club we’ll explore the papers that claim to have detected black hole harmonics. We’ll also give you the latest updates on the most recent - in some cases quite bizarre - LIGO detections.
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Hosted by Matt O'Dowd
Written by Matt O'Dowd
Graphics by Murilo Lopes
Directed by: Andrew Kornhaber
Executive Producers: Eric Brown & Andrew Kornhaber
End Credits Music by J.R.S. Schattenberg: / @jrsschattenberg
When physicists talk about black holes they’re usually referring to highly theoretical objects - static, unchanging black holes viewed from “infinitely” far away. This makes everything clean and simple enough to attempt the already notoriously complex calculations of black hole physics. But real black holes are created in the violent deaths of massive stars, and there’s nothing clean about that. And we now know that black holes merge - and in the process produce gravitational radiation that we’ve only just managed to detect with the miraculous work of the LIGO and VIRGO gravitational wave observatories. In the instant after its merger, the new, joined black hole looks nothing like the idealized theoretical black hole.
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@TheStarchamber 4 роки тому
As a musician, I'm surprised by just how much this made complete sense. Anyone who plays low-tuned bass guitars knows that the second harmonic is usually louder than the fundamental. Hence why tuners like to not show the note I want to tune to and instead show the perfect fifth because that overtone is louder...
@SgtMacska 2 роки тому
Very cool observation! But the fifth is the third harmonic. I think on an acoustic guitar it’s the second harmonic (an octave above the fundamental) that would tend to be the loudest. Is it the third harmonic on a bass?
@SgtMacska 2 роки тому
Actually I might be wrong about the acoustic guitar. Weird to think we’ve been listening to parallel fifths all this time
@Joshplaysguitar69 2 роки тому
Wow, i never realized why my E would tune to C until now.
@progfox Рік тому
yea thats one of the reasons i dont to more than a low b on my bass lol
@joshyoung1440 Рік тому
@@SgtMacska no, the fifth is the second harmonic. First is octave. Second is fifth above that. Unless you're using different nomenclature? Like mixing up first position and first inversion when talking about figured bass?
@XIIchiron78 4 роки тому
It's absolutely mind boggling the amount of information we can get from vibrations that are smaller than the diameter of a proton. LIGO is an awesome project!
@dennycote6339 3 роки тому
I can't wait for the space based observatory.
@pierfrancescopeperoni 3 роки тому
I can't wait for my sandwich.
@pepe6666 2 роки тому
@@pierfrancescopeperoni did you get your sandwich?
@pierfrancescopeperoni 2 роки тому
@@pepe6666 No, it's moving too fast.
@wave17vp 4 роки тому
It's amazing to think that we can listen to the universe to learn about it the same way we listen to things on Earth, but instead of vibrating air, the sounds vibrate space-time. I never thought of LIGO as a gigantic space-time microphone before.
@parnikkapore 4 роки тому
And, unlike many other waves in Astrophysics, G-waves from black hole mergers are apparently within human hearing range!
@wave17vp 4 роки тому
@@parnikkapore that's amazing
@DeathBringer769 4 роки тому
Me on guitar: I can hit some pretty sweet pinch harmonics. Black Holes: Well, check *this* out...
@RichMitch 4 роки тому
Anyway, here's wonderwall
@akshatsaxena1431 4 роки тому
0 3 5
@sdfkjgh 4 роки тому
Rich Mitch: What a coincidence, this is what I was listening to as I read your comment: ukposts.info/have/v-deo/cX-Sp657lqWBmYE.html
@Kevin_Street 4 роки тому
In spacetime music the black hole plays you. We're all part of the instrument when space itself is vibrating.
@Eireternal 4 роки тому
"Hold beer no?" -black hole "Ok come on" -me "Ehh me can't give. Only take." -black hole
@d3sync777 4 роки тому
Everyone else: Does Extreme Sports PBS: Does Extreme Space Time
@jzblue345 4 роки тому
Ok that was a good one.
@maxbarth4788 4 роки тому
A vast improvement
@stuartschaffner9744 4 роки тому
I had a very long interruption in my physics graduate studies, so I learned general relativity twice. The first time was in the late 1960's and the second at roughly the turn of the century. In the 1960's this was all theoretical. Supercomputers of that time were extremely expensive and not much more powerful than today's desktops. The work was fun, exciting, but extremely limited. None of us dreamed that we would get real data from an actual black hole merger, much less a continuing stream of new signals. As it was described to me at the time, Einstein's primary tool was Occam's Razor. The details were long ago and far away, but I recall that he posited that everything could be described by a curvature tensor that had 64 real numbers. Starting with the simplest terms, he set values that he felt were required to satisfy the known data, and set all the rest to zero. He was surprisingly right. Now it seems that he was spectacularly right, as was William of Occam. Certainly the story will get more complex soon, but much of what we know now to be true came from Einstein's faith that the universe was at its roots simple.
@NelKarlsonMercado 4 роки тому
Some of you who is reading this, didn't finish it...
@joshdenbeaux6594 4 роки тому
Fascinating. Thank you.
@RovingTroll 4 роки тому
@Buck Barry I'm not a college educated physicist, but I love learning about these things. I find it frustratingly amazing how we have never found a tangible way to disprove(or at this point, improve upon) Einstein's work. And I absolutely love the science we've done by carving out an ever better understanding of his work.
@tapferetomate914 4 роки тому
@@RovingTroll Dark Matter seems to suggest that Einstein isn't completely Right.
@Bitchslapper316 4 роки тому
@@tapferetomate914 Dark matter is also highly hypothetical.
@YvonTripper 4 роки тому
The worst thing about black hole mergers are the layoffs: "I'm sorry, despite the general theory of relativity positing that it is impossible to escape a black hole, we're going to have to let you go. But don't worry, you'll be given a generous package of Hawking radiation."
@Fahamut 4 роки тому
I gave you a thumbs up because you are clearly a geek and need all the love you can get. I love corney original humour and therefore love you! Sorry not in that way.
@MuhammadHanif-bx4pb 4 роки тому
NIICEEEE !!!!
@robertditto8673 4 роки тому
Hahahahahahahahahahahaha!!!!!! Love It!!!
@tomkenney5365 4 роки тому
"We're gonna have to let you go, but since you can't leave, and you're just gonna be hanging around, here's some information to store."
@joaquinel 4 роки тому
And a magic lantern that only lights up down. Maybe I need to improve my English.
@jonathanelliott8869 4 роки тому
I was thinking grav lensing then i saw that you thought of it..... dang it Matt, make me feel special
@kdhavle 4 роки тому
I'm more primitive. I could recognize "mass and spin" before he said it. Made me feel special, too.
@chamba149 4 роки тому
"It has a .69 spin" Researchers:"nice"
@jasonduvall9480 4 роки тому
People like you are the reason we're not exploring the stars yet.
@0mn1vore 4 роки тому
@@jasonduvall9480 - If XKCD is any indication, scientists can have a gross, weird, childish sense humour like anyone else, and still be great at science. Possibly grosser, weirder and even *more* childish than regular folks...
@aks9545 4 роки тому
@@jasonduvall9480 you should be the subject of your own comment
@HowieHellbent 4 роки тому
@@jasonduvall9480 I disagree
@osaiha5913 2 роки тому
@@jasonduvall9480 naw it's our economic system that breeds stupidity because you don't need to be smart to make someone else richer and the rich aren't incentivize to innovated. They are incentivize to make a profit.
@DrStrang3love 4 роки тому
As a chemist, I can't help but notice some at least superficial parallels between black hole harmonics and atomic orbitals.
@rudyj8948 6 місяців тому
I believe both are ultimately derived from spherical harmonics, so I don't think the connection is all that superficial!
@RobertBelcher 4 роки тому
This episode brings back aggravating memories for me. Twice I've lent my harmonica to a black hole... I never got them back.
@daddymuggle Рік тому
Yes, but the black hole's rendition of Paint It Black was epic.
@brianmessemer2973 4 роки тому
I'm a music theory teacher laughing at the fact that you just made a (fantastic) video on overtones and the harmonic series. 😃👍👍 Music of the spheres indeed!
@VoidHugger 4 роки тому
@GET RAD Those who use others' jokes can't make them themselves.
@jamieg2427 4 роки тому
@GET RAD Those who are jerks are jerks. 😂
@voidremoved 4 роки тому
@@VoidHugger :
@LuckyMoniker 4 роки тому
i'm a music theory flunkie so enlighten me, sonic overtones can be used to deconstruct the entire signal? By this theory, gravitational waves are behaving like sonic waves, so whats to stop Gravitational Sonar? seems like highly effective way to measure mass from a large distance
@VoidHugger 4 роки тому
voidremoved ;)
@ralphc.644 4 роки тому
The spherical harmonics table at 4:14 reminds me of the electron orbital shapes table (s,p,d,f,etc). It's nice to see giant things like black holes and tiny things like atoms agreeing on something. \o/
@pgoeds7420 4 роки тому
Not surprising as you get spherical harmonics by integrating (Shrodinger's) wave equation in 3D.
@whippedcreamguy8564 4 роки тому
Space: Noise is no no Black Holes: *sans in harmonics*
@abstract0407 4 роки тому
I came here from a gay jojo video stream
@tomareani512 4 роки тому
Remember: If he EVER ends an episode by saying something other than "Spacetime", we RIOT!
@AndreLeRoux81 4 роки тому
Pitchforks and torches, ready...
@adumberfling9959 4 роки тому
All I got are khakis and tiki's...
@paulhench7762 4 роки тому
He already ending one with TimeSpace! But not pitchfork worthy, I deem!
@tomareani512 4 роки тому
@@paulhench7762 correct. Space and time are two sides of the same coin, and are interchangeable in this case. Therefore no offence was committed.
@paulhench7762 4 роки тому
@@tomareani512 Totally agree. This guy is the best: Neil deGrasse Tyson eat your heart out!! (ha ha!!)
@spoonikle 4 роки тому
The detection of gravitational waves was such a massive game changer. Massive leap forward in the human understanding of the universe. We need to get that orbital interferometer set up.
@jamielonsdale3018 4 роки тому
Also, to say that these BH/BH mergers took place at almost the same time is to forget that time is directional. No matter where you are, time regresses radially at c. If BHM1 2 lightyears away from Earth explodes, and a year later, BHM2, almost perfectly in plane also explodes 1 lightyear away, the further explosion and the nearer explosion would appear to happen almost simultaneously. Viewed from 2 lightyears away on the opposite side of Black Hole Merger 1, those explosions would now be viewed 2 years apart. This is because BHM1's information would get halfway to the observer before BHM2's information even sets off, then a year later, BHM1's light will reach the observer, as BHM2's light passes the point in space where BHM1 occurred. That light still has two years of travelling to occur before it reaches the observer, and that's all without the added complication of relativistic motion and expansion. Your observation of the past is relative to your position to the past.
@leofu97 2 роки тому
Matt explaining the overtone series better than any music theorist - imagine what great music could be made if there was more collaboration between physicists and musicians...
@williamcopeland4110 9 місяців тому
Music is applied physics. It's all oscillations.
@sunitapalissery258 4 роки тому
Exciting times ahead. Thanks for keeping us informed
@cheaterman49 4 роки тому
Space Time Journal Club always makes me excited like a kid about to open some unexpected presents! And rightfully so - these findings are amazing, it would be very interesting to see if more data comes to confirm the no hair theorem (and confirm or deny the absence of electric charge in black holes), as well as some more studies about these coincidental events - what I assume you mean by gravitational lensing in this case would be that we're merely seeing echoes of the gravitational waves? Great video really, loved it!
@urinater 4 роки тому
FUN FACT: Your farts also create a gravitational ripple in spacetime
@Sollace 4 роки тому
It's insane how fast this has all developed, from the first photo of a black hole just a few months ago, to scientists proving Einstein right yet again!
@imi9894 4 роки тому
Great video. Please do more!
@aghosh5447 4 роки тому
Pbs space time you are doing amazing work. Dont know how many children are getting to learn such a beautiful higher science concepts through you and are being intrigued.
@chrisgeggis5603 4 роки тому
I can highly recommend the book "Ripples in Spacetime" by Govert Schilling and Martin Rees on this topic. I read it last year and was so impressed with the description of the observatory that I made a pilgrimage to Livingston, LA to see it for myself.
@jpvlsmv2023 4 роки тому
The two collisions so close together were the mutually-assured destruction of two advanced societies who battle by throwing black holes at each other.
@RedRocket4000 4 роки тому
Ah a Lens War.
@chrissonofpear1384 4 роки тому
Or Xeelee Saga?
@ekeys6897 4 роки тому
who knows... lol!
@anteconfig5391 4 роки тому
Well, how else are you gonna get rid of an immortal?
@PeterB12345 4 роки тому
Or perhaps a black hole weapon was deflected by intercepting it with another black hole? Point defense?
@jacobkrebs5026 4 роки тому
Never been this early for a video. Love the work as always 👍
@joaquinel 4 роки тому
WOW AGAIN!! After re-repeated view... barely understand. Maybe. Anyway, it's not just a slogan, it s really exiting. New set of data means a whole eye opening, like telescope, like radioastronomy. * Right! When you punch a guitar string, the tune appears to change, from noisy to rich-non-tuned to rich-tuned to purer... The noise is not random. You hear chaos because the harmonics are stronger at start and the first to decay. So I believe you.
@whoofianbrony8804 4 роки тому
Black holes: *THIS ISNT EVEN MY FINAL FORM!*
@Night-Chan 4 роки тому
Kai ok en!!!!
@mattym8038 4 роки тому
Typical Aussie, always thinking about those Waves
@theshowman8478 4 роки тому
I have to watch these videos several times to try and absorb them. That is not a criticism, it's a compliment.
@no_more_free_nicks 4 роки тому
Good video, great subject!
@mcintoshdev 4 роки тому
"Cough Cough Gravitational Lensing cough cough" LOL
@Luwab 4 роки тому
so very much like two drops of water merging together, interesting. Or two vortexes
@shaungahan5227 4 роки тому
Thank you Matt
@Gunslinger416 5 місяців тому
So cool that i came across this video. In 2020 I gradueted in Physics and did my thesis on quasinormal modes of black holes and Cosmic Censorship Conjecture. So good to comeback to this since i havent worked with physics since then. And I remeber reading both of this pappers by Teukolsky et al and making a presentation about it to my group
@tiborszobonya8018 4 роки тому
Slightly unrelated question: How do we know that black holes are points of infinite density? What if it just a sphere, like a neutron star, just much more dense? Compressed to the point where the matter (whatever particles it consists of) cannot be compressed anymore. I mean "point of infinite density with finite mass" doesn't really make sense.
@zahirkhan778 4 роки тому
i would like to see this answered in the next QA
@Skepticfornow 4 роки тому
We know this because extremely smart people that do extremely complicated math have taken the time to figure it out
@pancracio1710 4 роки тому
I think thats just how the math works. We know the theories we have are incomplete, so as of now we just act like its a single point but really its an unknown.
@1Wanu1 4 роки тому
No knowm mechanism to stop the collapse + the fact that we see them black and not a new type of star?¿
@radiowallofsound 4 роки тому
When the only math function we've got to explain some phenomenon returns a singularity at a given input value, we say there's something infinitely small or big in that phenomenon. But i guess that doesn't mean there actually is, it's just the best description we've found so far to explain and predict it. Someone with more knowledge might correct my guessing please?
@danieljensen2626 4 роки тому
Amazing how fast we are going from barely detecting gravitational waves at all to using gravitational wave signals to analyze the things emitting them.
@danieljensen2626 4 роки тому
@XY ZW Please stop watching conspiracy theory videos.
@RedRocket4000 4 роки тому
@XY ZW Your trolling and thus probably wasting my time but we not talking about 2D objects we talking about 3D objects bending 3 +1 SpaceTime. If your referring to the Singularity that is a 1D object but the effects we observe are of the area around that which do bend space. If Singularities actually exist or are actually really small 3D objects. Mat covered before majority of physics not believing singularities exist because they violate ideas on Quantum Mechanics.
@vladdrakul7851 3 роки тому
In 1968; on LSD the famous first Hippie band The Grateful Dead wrote this classic tune *'Dark Star'* about time and space. AMAZING! *Dark star crashes, Pouring its light, Into ashes, Reason tatters, The forces tear loose from the axis, Searchlight casting, For faults in the Clouds of delusion* [Chorus] *Shall we go, You and I, While we can? Through The transitive nightfall Of diamonds* *Mirror shatters, In formless reflections, Of matter, Glass hand dissolving, To ice petal flowers, Revolving,, Lady in velvet, Recedes, In the nights of goodbye* [Chorus] *Shall we go, You and I, While we can? Through The transitive nightfall Of diamonds* Wow that must have been some trip there 'Captain Trips' Jerry Garcia!
@andreac5152 4 роки тому
Flawless explanation, as usual.
@coopergates9680 4 роки тому
How long have you followed the channel?
@andreac5152 4 роки тому
@@coopergates9680 maybe a couple years
@coopergates9680 4 роки тому
@@andreac5152 About the same for me. This one, Numberphile, Computerphile, Sciencephile the AI, Vsauce, SFIA, ... lots of 'em are worth digging into.
@tomkenney5365 4 роки тому
Great video! You smoothed over some bumps in my understanding. What blew my mind recently is about the info problem. Apparently information is written to the surface of a black hole, or the event horizon, not stored "inside." And the entire Google database could be written on a black hole a trillionth of a trillionth of an inch (in diameter, I think, but that's pretty moot).
@parnikkapore 4 роки тому
...and the "hair" on black holes is used in quantum mechanics to resolve that information paradox. So if the no-hair theorem holds through, things will be _really_ fun.
@tomkenney5365 4 роки тому
I'm beginning to wonder if black holes can be dumbed down enough for me to understand. Kinda have quantum stuff down. Well, I can say some of the right words in the right order. More or less understand fusion. But, yeah, I'm way over my head. Still trying, though.
@professormemebrain1352 4 роки тому
You're probably the most relaxing science related UKposts channel I follow, keep up the great work as always
@xarmanhskafragos2516 4 роки тому
3blue1brown
@RichMitch 4 роки тому
Tibees!
@maniestacio9245 4 роки тому
Allow me to introduce you to Journey to the Microcosmos ✨😌
@RichMitch 4 роки тому
@@maniestacio9245 French whisperer
@420frankp 4 роки тому
Hello wonderful person. Living in a black hole I see. Go check out Anton Petrov. "What da math."
@elliottcooke6426 4 роки тому
I just realized that the beginning audio clip of PBS Digital Studios is the Mr. Rogers Remix, reversed.
@davburns 4 роки тому
I'm not an astronomer or a physicist but I still follow @LIGO on twitter. It thrills me to see, within a few minutes of a BBH detection, that there's one less black hole in the observable universe. Also the idea that gravity waves may be affected by (cough, cough) gravitational lensing (cough) is causing some higher order spherical harmonics in my mind.
@RyllenKriel 4 роки тому
Hey hey we're the Monkees! People say we oscillate around! Takes quadrillions of us to make black holes! But only gravity will keep us down!
@chuuuu1131 4 роки тому
I just realized that the background is moving. I can't unsee it now
@flymypg 4 роки тому
The only remedy is to Stare at Matt's T-Shirt. Then, of course, go get some merch...
@chrisrichardson4693 4 роки тому
I think your just too high. Or I am. Cuz I cant see it moving
@chrisrichardson4693 4 роки тому
Woah holy shit nvm I see it now
@jamielonsdale3018 4 роки тому
Nothing is moving, it's just changing colour. That's how pixelated displays work.
@legendofman12 4 роки тому
Thank god i thought i was just high
@BoomerZ.artist 4 роки тому
Thank you for putting a time scale. I get so annoyed when things are said to happen "quickly" but don't actually say how quickly.
@RDTRNT 4 роки тому
Cool stuff, as always! Not sure if you ever did a video explaining how it might be possible to extract energy from a rotating black hole (Penrose process e.g.). If not, that looks like an interesting topic (for me).
@KalyanNC 4 роки тому
Since we are dealing with black holes, is it reasonable to expect that the overtones don't really die completely but give rise to quantum effects at ultra-low amplitudes?
@garethdean6382 4 роки тому
It is, and low amplitude effects are those most distorted by time dilation, to the point that they should never quite die away.
@SpecialEDy 4 роки тому
A thought that has caused me to lose a lot of sleep, the Legrange Point between two colliding black holes. Imagine you had two black holes traveling at 99% of light speed, on a collision course where the event horizons temporarily overlapped, but the singularities at the centers missed the opposing original event horizon. Is it possible for the two to be on an escape trajectory, or does the overlapping and momentary merger of the event horizons disallow any escape trajectories? If they can escape, it would be possible to put balance a spacecraft on the Legrange point between the two objects, pass within the event horizons, and escape.
@jaytheamazing197 4 роки тому
Once you get to a certain point, nothing made of matter can escape a black hole so that includes black holes themselves. The black holes would just collide and become one black hole so them splitting off again wouldn't happen.
@hosmerhomeboy 4 роки тому
and now this will keep me awake too, thanks for the food for thought
@martijnbouman8874 4 роки тому
I have thought of something similar. Suppose you have two charged black holes that you keep in place with giant magnets. Suppose you allow their event horizons to just overlap. A friend of mine calculated that if you treat the black holes as point masses, you should be able to travel right in between them without the escape velocity ever being bigger than the speed of light, due to both black holes (partly) canceling out each other's gravitational attraction. Would this be possible? If so, what would you see?
@SpecialEDy 4 роки тому
@@martijnbouman8874 I've wondered if the event horizons would repel one another, since you are near a point, the Legrange Point, where the net gravity is zero. So you might be inside a bubble of space time surrounded by event horizon.
@SpecialEDy 4 роки тому
@@jaytheamazing197 in the example I used, the singularities are on an escape trajectory moving just past each other's event horizons, but the event horizons themselves overlap.
@Tromben120 4 роки тому
This is the first Space Time video I've actually understood. Thanks, music school!
@TenorCantusFirmus 3 роки тому
Graduated in Musicology, student of Composition and keen on Astronomy and Astrophisics here, and this video was very exciting for me. Actually, the instrument I'd find most similar in behaviour to a recently merged pair of black holes are either bowed/plucked instruments' bodies (the likes of violin, guitar, etc.) and timpani membranes.
@davepenaphd4300 4 роки тому
Is resonance a concept that applies to gravitational waves?
@LeoStaley 4 роки тому
From what I understand, when a guitar string vibrates back and forth, it does so because momentum is being preserved, losing energy as it slows down. The fabric of Spacetime itself doesn't have momentum, so why does it bounce back and forth when the black holes merge? Edit: I have heard of gyroscopes that use oscillation instead of rotation to achieve gryoscopic effect (like the gyroscopes in the JWST, or my smartphone), but I never understood why it worked as a gyroscope. Is the momentum in oscillation a kind of angular momentum in some sense? I still don't get how a black hole, a spacetime topological defect, can *spin*, but you already did an episode trying to explain that, so I might just be dumb.
@TygerTygerBrnigBrght 4 роки тому
Id say it likes to settle into the lowest energy state, an oscillating mass vs a static mass, the static mass probably has a lower energy state. I am not a physicist tho.
@photinodecay 4 роки тому
The field strength is the analogous quantity to the guitar string's displacement from the straight-line position. It's the energy of that displacement from the "zero" point that is being conserved.
@danieljensen2626 4 роки тому
I think the semi-Newtonian picture would be to say the mass in the blackhole is what is doing the sloshing, and it then warps the spacetime around it. But alternatively, while Spacetime itself doesn't have momentum I think that gravitational waves might. Just like it doesn't make any sense to think of electric and magnetic fields having momentum, but photons definitely do. My GR isn't good enough to explain how that gives you oscillations in the event horizon though.
@QlueDuPlessis 4 роки тому
This has to be one of the questions featured on the next q&a segment... I hope.
@NawiasemPiszac 4 роки тому
@Brandon Piperjack Nope - it'd loose its energy by converting it to heat that gets radiated. Same with black holes. Those gravitational waves carry away energy making "ringing" die down.
@alexisrdevitre 4 роки тому
Brilliant video man! What’s an astrophysical blackhole and what makes it different from other blackholes, apart from missing one of the properties.
@IuliusPsicofactum 4 роки тому
Great episode.
@DavidKennyNZL 4 роки тому
The first sentence packs so much in the brain reels to keep up as I re-watch it again and a gain. "Black holes are crazy enough on their own - but crash two together and you end up with a roiling blob of inescapable space that vibrates like a beaten drum."
@forciblez4218 4 роки тому
Making music with gravitational waves be like :Ｏ00Ｏ0Ｏ0ＯＯ0 ( ik it's bad )
@Joeygonzales09 4 роки тому
Man I love your videos keep em coming.keep finding new ones and its cool.Great work an I've mentioned b4.canged the way I view life the cosmos and I'll say it again(Yeah you look like an actor and your a rockstar,even if there asteroids or comets planets and suns.there rocks ....LOL...KEEP EM COMING...
@rrryan9719 4 роки тому
Professor O'Dowd is the best professor. Change my mind.
@georgelastrapes9259 4 роки тому
When those BHs first kiss, the instant (or Planck time) when the two (topologically understood) join, is something, a Poincare conjecture, or whatever, violated? Or at least subjected to a merciless stress test? Asking for a friend who is mathless.
@WodkaEclair 4 роки тому
Me. The friend who is mathless is me.
@johnsorrelw849 4 роки тому
Sounds like an interesting question that I don't understand.
@RedRocket4000 4 роки тому
Depends if Gravity is actually a force. So far all evidence is Relativity is right and Gravity only a effect, a measurement of curvature of space time if that holds than it could be an instant and Singularities really are one dimensional. Glad you worded it both ways. As lots of Quantum Mechanics ideas have Gravity as a force it might be true and thus it would be a Planck tick.
@georgelastrapes9259 4 роки тому
@@RedRocket4000 Those who argue that gravity is not a force but something else emulate the eminent philosopher Gustav Freitwig, who discovered that there is no such thing as a chair. What we call chairs are only small padded tables for the buttocks ("Arschtafeln"). Concerning singularities-- a region of space has finite density, and then infinite density-- but there are no numbers larger than any real but smaller than infinity. How is this gap crossed?
@marcst3199 4 роки тому
a bit offtopic: What are those beautiful backgrounds you use every episode? Could you link them in the discription, as I guess those are pics the NASA made?
@SuperVstech 4 роки тому
It appears to be a space time animation... everything is in motion, and many points come and go in the background... Could be an elaborate mixture of many Hubble images I suppose...
@debray-kingbomatthieu5579 4 роки тому
Interesting to talk about ringularity vibrations and what they generate around during BH collision. PBS
@SerunaXI 4 роки тому
Beautiful how you can use music to explain astro and microphysics.
@might_e 4 роки тому
“A so-called ‘Dimensionless Spin Magnitude’ of .69-“ Nice.
@srgkzy1294 4 роки тому
yes!
@jamesfowler6306 4 роки тому
How does a singularity spin?
@Br3ttM 4 роки тому
@@jamesfowler6306 A singularity means a lot of physics ends up with dividing by zero trying to describe it. Spin is just one of a list.
@daddytito917 4 роки тому
Emmanuel Landwehrle nice
@HolyMith 4 роки тому
@@jamesfowler6306 The singularity (presumably at the "centre" of the black hole) doesn't spin at all, being dimensionless. The spacetime that is warped by the singularity does spin however. Think of it like a whirlpool: the object clearly spins, but if you were to ask what is spinning, well it's just the water itself.
@karnagereaver8313 4 роки тому
"WhaT Is ThaT MeLODY!?"
@anugrahmathewprasad172 4 роки тому
What's that M'Lady
@loganmoseley 4 роки тому
Anugrah Mathew Prasad Quoting Overwatch’s astrophysicist character “Sigma”.
@xamesm 4 роки тому
Darude Sandstorm
@averyseriousguy5784 4 роки тому
Karnage Reaver Dam it you beat me to it
@katapellos7 4 роки тому
Loooool
@Cavistus729 4 роки тому
this is the only channel where i need to actually prepare myself to for the mental workout
@ntdscherer 4 роки тому
Allow me to introduce you to Numberphile...
@Cavistus729 4 роки тому
@@ntdscherer numberphile is a channel about mathematics. this channel is about the places and scales where mathematics seemingly kills itself.
@tonemonkerud9112 4 роки тому
btw the curvature of GR is emergent, but it is emergent from structures with the same type of curvature, add infinity. the same thing goes for magnetic type effect, all fermion like particles are 4 component meaning essentially that their magnetic moment is diffrent depending on orientation of their spin, chirality is essentially the direction of that emergent field in relation to particle spin. it goes right back to the molecular vortex theory, although thats explicitly wrong, with curvature like in GR it works fine.
@EvilSnips 4 роки тому
Last time I was this early the four fundamental forces hasn't separated yet.
@MelindaGreen 4 роки тому
Where can we listen to these ring-down harmonics?
@chulupytheone 4 роки тому
@spacetime In This video we see two different behaviors for the merging event horizons, in 1:54 we see than the event horizons stretch to reach each other, in 5:54 we see that the event horizons reduce its size away from each other. I think the second simulation is closer to reality, since if for example, you were in between two planets of the same size, you wouldn't fall to neither of them, even though if you were at the same distance to only one of them you would inevitably fall. If that is true, it means that once you cross the event horizon, you can escape from it! (if you are in the right place and with the right tangent velocity...). That also means that light that has been trapped for millennia inside the event horizon could escape and that that event should be very luminous and carry information.
@AmriteshGaniger 4 роки тому
Don't get me wrong, but whenever I don't feel asleep, I watch your videos lol. Your voice is so soothing!
@colesnapp9124 4 роки тому
Matt, I don't understand how two event horizons can merge in a non- infinite timeframe from our point of reference. Wouldn't the two horizons accelerate towards each other until, when very close, appear to slow down, never quite touching?
@sagelink2 4 роки тому
Even tho theoretically the density of a black hole is infinite and nothing can escape an event horizon, the one with more mass will eventually suck up the other and gain more mass. Black holes are contradictions themselves but we learn something new every year lol
@RedRocket4000 4 роки тому
@@sagelink2 And for fun the total Mass will be less than the combination of the two masses the rest radiated as Gravity Waves which starting at the event horizon I get very confused on why we notice anything considering how slow time is moving in that region.
@nichevl 2 роки тому
Yes I'd expect that, though even if that part wasn't slowed much due to time dilation eg some accreted mass outside the EV then after both EVs merge even a little like a dumb-bell then, by extreme time dilation the cores or singularity of Planck neutron star etc would take infinite amount of time from our perspective to merge...
@KrisCadwell 4 роки тому
Thanks to my knowledge of music and audio production I actually have some idea what this episode was about! I'm sure it's just an anomaly. Great episode.
@jovetj 4 роки тому
This was really neat.
@frogstud 4 роки тому
Nice video on Quasinormal Modes
@eval_is_evil 4 роки тому
So a lame physics joke : a neutron enters a bar, gets a drink and finds out "It's free of charge" I'll leave now
@jpaulc441 4 роки тому
and the bartender said "we don't serve hypothetical faster-than-light particles here" A tachyon walks into a bar...
@marcelo55869 4 роки тому
@@jpaulc441 you fool! tachion just entered the room many hours ago
@jamesmnguyen 4 роки тому
no, the better punchline would be, the neutron comes out as a proton and electron
@mortimerhasbeengud2834 4 роки тому
@@jpaulc441 A Higgs Boson walks into a Church. The priest says, “We don’t allow Higgs Bosons in here. The particle responds by saying: “But without me, how can you have Mass?”
@Rhekon 4 роки тому
@@jpaulc441 I see what you already did then.
@NewMessage 4 роки тому
Did someone do the 'Great band name' joke yet? Yeah? 472 times? Oh, alright.
@WilliamFord972 4 роки тому
This made so much more sense when you put it in musical terms.
@doku3809 4 роки тому
What would it be like to be in the centre of two colliding equally sized black holes?
@jerryfrancisco7035 4 роки тому
Guitar: Which harmonics can you play? Black Hole: Yes.
@sirvongalot 4 роки тому
Whoa... “Dark Matter Monkeys”... I totally want one now. (9:57)
@zlatanibrahimovic8329 4 роки тому
ukposts.info/have/v-deo/m3uAqIaJZ3qLxYk.html
@xavierinthetube 4 роки тому
Wow, that was extremely cool
@avs6362 4 роки тому
General Relativity is not the final frontier, but still it is awe inspiring how Relativity is holding up in almost every way...
@avs6362 4 роки тому
@XY ZW Why ?
@avs6362 4 роки тому
@XY ZW Well then what about the Gravitational lensing, and slowing of the clocks in Satellites and Gravitational waves? These are the observed phenomena. How else would you describe it? And why we are not able to accelerate the particles beyond the speed of light? Particle accelerators support Relativity!
@avs6362 4 роки тому
@XY ZW Thanks for the explanation and reference, I'll study further!
@trbone95 4 роки тому
Physicists: we've run thousands of simulations predicting the harmonics of merging singularities in spacetime Me: I can't find my glasses when they're sitting on my head
@narfwhals7843 4 роки тому
Physicists: we've let computers run thousands of simulations predicting the harmonics of merging singularities in spacetime Also Physicists: I can't find my glasses when they're sitting on my head
@SolaceEasy 4 роки тому
Hmmm, two similar mergers in the same part of the sky? A lensing event, perhaps? Dark matter interference? Love those rabbit holes!
@zahirkhan778 4 роки тому
Could be an echo from the edges of space.
@photinodecay 4 роки тому
If there's an additional highly massive object (probably a black hole) between us and the merger, the waves from the merger could have been lensed, yes.
@yorkerold 4 роки тому
That's a N I C E spin magnitude.
@jimzamerski 3 роки тому
I love that it sounds a bit like a drop of water hitting the surface of a body of water... meanwhile, the galactic filaments look like a 3D version of the 2D pattern of light that's cast onto the bottom of a wavy swimming pool in bright sunlight. Fluid surface interactions at boundaries... fractal
@LunaticTheCat 4 роки тому
I saw Anton's video on this a couple days ago. Very interesting topic.
@BenMitro 4 роки тому
I think Einstein's GR should get an A+ about now.
@bbbenj 4 роки тому
Excellent !
@rickhobson3211 4 роки тому
Some of those patterns in the merger simulation reminded me of electron orbitals.
@revenevan11 4 роки тому
Yep, both come from the same mathematical equations of spherical harmonics! This episode gave me flashbacks to struggling to understand spherical harmonics and use them to predict the shapes of electron orbitals towards the end of the intro to quantum unit of my university's 2nd year physics class.
@NickBatinaComposer 4 роки тому
Hey 1. I love your channel so so much, I spend wayyy too much time watching your videos! 2. I’m a musician, specifically a composer! Are there any papers or pieces of raw data about this topic that I could find to use for a symphonic piece down the line? I’m very interested in using data from the universe around us as the foundation of many of my tunes, the most recent being an electronic fixed media piece called “a double slit experiment” etc lol. Also, if you’re interested in this style of music, or are just curious how data from an experiment could be turned into sound, check out orchestral pieces by Iannis Xenakis! He’s an amazing Greek composer that uses spectral and graphic scores to play out mathematics through an orchestra! Anyways, cheers from Tallahassee Florida, and I hope the rest of your week is awesome!
@michaelsommers2356 4 роки тому
Might it not be a little difficult to get a couple of black holes into the concert hall?
@NickBatinaComposer 4 роки тому
Michael Sommers what I’m thinking is dividing the orchestra into two parts, with each half using rhythmic polyrhythms to indicate the complex waveforms of these black holes falling into each other! It’ll essentially be two “symphonies” that slowly start to become more indistinguishable, followed by a super fast accel into a massive 12 tone cluster chord across the entire symphony, then it’ll slowly putter out over the last 3-4 min using a quiet bass drum in unison with the timpani to show the “unseen” waves after the black holes merge! I just need good realistic data to use to make it happen lolol
@michaelsommers2356 4 роки тому
@@NickBatinaComposer Darn. I was hoping to see Ling Ling play the black hole. Anyway, here are some sound files: www.gw-openscience.org/audio/
@michaelsommers2356 4 роки тому
@@NickBatinaComposer Did you see this one: ukposts.info/have/v-deo/jJKIrauBkK-TrnU.html
@NickBatinaComposer 2 роки тому
@@michaelsommers2356 yooooo, you came thru with that gas, nice!! And heyyy, we might not be able to get the black holes in the hall, but there’s nothing preventing us from putting the hall inside the black hole!!! Cya there
@speedball1919 4 роки тому
My two favorite things: Music and Black holes
@maxmusterman3371 4 роки тому
oh you dont like existing that much? im sorry to hear that
@lotusflower_ 4 роки тому
@@maxmusterman3371 lol omg
@martiddy 4 роки тому
@@maxmusterman3371 but do we exist? *plays Vsauce music*
@maxmusterman3371 4 роки тому
@Martiddy - Sama cogito ergo sum
@Vasharan 4 роки тому
That's why I love Muse.
@shatterthemirror8563 4 роки тому
So this is the "music of the spheres" I've been hearing so much about?
@mythology2467 4 роки тому
I have some questions about the dumbbell black holes. 1. If there is only one direction in a black hole that's to the center then where is the singularity in that shape? Is it the center of the dumbbell? 2. Is there a moment you could fly in between them near merger as you are being pulled in each direction at near the speed of light? 3. How and when do the singularities combine when they go about this shape? 4. If you shot a black hole at another one so that the singularity of the first would go straight through the center of the other, would it also ring and blow out to become a dumbbell?
@garethdean6382 4 роки тому
0.) The following assumes singularities exist. This is what relativity gives us, but they violate quantum mechanics so nobody's sure what the deal is there. 1.) If the hole is not spherical then the singularities will not have merged yet, the warped hole will have TWO centers that will take time to spiral together and merge. 2.) Yes, it would be very uncomfortable due to the massive tidal forces involved. 3.) There would be a fixed time before the singularities would merge, about 100 milliseconds for the mergers we're seeing. They would spiral together like the holes, drawn by their own gravity. 4.) Shooting holes directly at each other will make them merge faster. Since there's no angular momentum to shed they won't form the dumbbell shape, it would be a much cleaner merger.
@jcoronet2000 4 роки тому
6:02 that simulation shows positive deflection of space time. so, the areas next to merging black holes effectively produces anti-gravity?
@SuviTuuliAllan 4 роки тому
oh like boats?
@zahirkhan778 4 роки тому
If you look closely the arrows are pointing down. It is showing amplitude, not positive deflection.
@NimbleBard48 4 роки тому
I understand why you would say that but it's not that. It's sort of easy to answer yourself if you imagine falling into the center of gravity of both black holes from the side. Also, you can check the original video description for more details. ukposts.info/have/v-deo/aZGYoWlqoHty1qM.html
@Soupy_loopy 4 роки тому
@@SuviTuuliAllan, LOL; yeah like boats!
@jcoronet2000 4 роки тому
@@zahirkhan778 thank you
@jovetj 4 роки тому
I can't wait until black hole collision chimes make it into EDM...
@deusexaethera 4 роки тому
Rule 34...somehow.
@zablvit 4 роки тому
Make a video on recent noble prize in physics :) Both astronomy and discovery of first planet in other solar system!!!
@AntonioMarti9 4 місяці тому
This is at the core of a fantastic book by physicist and musician Stephon Alexander: The Jazz Of Physics
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