What Would It Look Like To Fall Into a Black Hole?
CNETNate writes "A new video simulation developed by Andrew Hamilton and Gavin Polhemus of the University of Colorado, Boulder, on New Scientist today, shows what you might see on your way towards a black hole's crushing central singularity. Hamilton and Polhemus built a computer code based on the equations of Einstein's general theory of relativity, and the video produced allows the viewer to follow the fate of an imaginary observer on an orbit that swoops down into a giant black hole weighing 5 million times the mass of the sun, about the same size as the hole in the centre of our galaxy. The research could help physicists understand the apparently paradoxical fate of matter and energy in a black hole."
How did a Goatse story get on the front page?
I don't assume you see red grid lines?
Often wrong but never in doubt.
I am Jack9.
Everyone knows me.
So falling into a black hole looks and awful lot like a slashdotting. Good to know!
Kwisatz Haderach
Sell the spice to CHOAM
This Mahdi took Shaddam's Throne
It looks like you are seriously fucked.
I grew up in Birmingham, Alabama.
I think it's a lot like that.
back in 1979.
http://www.imdb.com/title/tt0078869/
man, that V.I.N.CENT. was such a character!
More music, fewer hits
...and a finite circumference. An observer falling towards the singularity would feel the local gradient in the gravitational field increase as they fall, probably to the point where staying in one piece becomes a challenge. This would go on for a long time from their POV.
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Simpsons did it
Dual Opteron < $600
I've seen that before: whenever I take ketamine on an acid comedown. It looks just like that!
About the same as it feels to be a bug hitting an Audi windscreen on the Autobahn... when you've been stretched to several hundred times your original length, you're most likely no longer capable of observing anything, so it looks pretty much like nothingness. Can a soul escape from the event horizon of a black hole, or is it doomed to spend forever in purgatory inside the black hole? And is that better or worse than being stuck in New Jersey?
I've abandoned my search for truth; now I'm just looking for some useful delusions.
The same person (Andrew Hamilton) is behind this website:
Inside Black Holes
Which has a lot cooler CG.
There's a nice site about black holes: http://casa.colorado.edu/~ajsh/schw.shtml
It contains simple videos of what happens when you fall into a black hole. They are just animated GIFs, because this site existed long before YouTube and Flash movies.
True. On the other hand, if I stuck you on the surface of Titan, you'd be dead, too. So it's pretty pointless to envision the surface of Titan or send probes there or anything like that.
It doesn't tell us anything about what they actually did, or how the resultant program functions.
It simply regurgitates things that we think we already know, with a video.
Some people are only alive because it's against the law for me to hunt them down and kill them.
1. Reaching a black hole is not impossible with current technology, but it is beside the point.
2. This is a research tool intended to help physicists understand what happens to matter as it enters a black hole.
3. Using all your grant money to run on an SGI cluster is so... 1990s. This was probably rendered on a modern laptop. If the calculations really did turn out to be too computationally intensive for a modern personal computer (I wouldn't count on it), they would have bought time on one of the more modern Linux or Mac computing clusters.
4. "Cool" is not the purpose. If it was, there wouldn't be fun guide-lines left in the film. This is a research tool that happened to get passed on to NewScientist to share with anyone who might be interested.
Javascript + Nintendo DSi = DSiCade
Was I the only one thinking it?
Supposedly, it looks like a cheap graphic. I think it looks more like this :P
"A code" in the lingo of the scientific programming community means "a computer program that simulates these equations in an expedient manner," i.e. there is more than one way to discretize and program the solution of the equations, but they have done it in one specific way. It is therefore "a computer code."
I had but a simple dream, to destroy all humans.
Somebody divided by zero,
Oh shhhhhhiiiiii------------
Pointless unless you've studied relativistic physics, in which case the video is a modernized version of the classic thought experiment "Einstein's Train.". Everyone involved would be pretty dead if the train was moving at speeds fast enough to introduce relativistic effects perceptable by the ordinary senses, yet the illustration aids in an understanding of the physics.
The article is quite clear:
The death of the hypothetical observer is irrelevant to the usefulness of the video.
Figuring out the Riemann geometry for this was non-trivial and should be lauded not dismissed as some trivial "cutesy video".
An Education is the Font of All Liberty
http://www.google.com/search?q=link%3Awww.newscientist.com+site%3Aslashdot.org
Come on guys, almost up to 1500!
Good lord, it is so transparent. How about banner ads from them instead?
...dark?
If you were falling into a black hole, I think it would be far more interesting to do so while facing away from the hole, as this would theoretically (according to relativity) allow you to witness the remaining life of the universe played out at a greatly accelerated rate.
I'm sure it would suck.
After finding this website, I would say you are correct.
There is also a "Step by Step into a Black Hole" of similar images as the video in TFA. Worth looking at if this is an interest.
I also found a cool animation of a simulated "Flight through a Wormhole".
It all just seems basic animation. Cool, but nothing really ground breaking.
I imagine that the models used to base the animation on could have taken some resources.
P.S. I would hope the comment you replied to was a failed attempt at humour. Surely he was jesting!
Down With Slashdot BETA!!! I've been around the corner and seen the oliphant; you can only abuse me from your perspecti
Wrong URL.
Try this one and you'll REALLY see what it's like to fall into a black hole.
http://www.washingtonpost.com/wp-dyn/content/article/2009/03/31/AR2009033103684.html
narrator has a really annoying speech impediment.
Citation? Not that I necessarily doubt you but this is news to me, I wouldn't mind reading a bit on it. It seems to me to be a very odd usage of the word "code."
..."what happens there is still a mystery."
I remember seeing a couple of documentaries on this a while ago...
Repton.
They say that only an experienced wizard can do the tengu shuffle.
Really, black holes emit energy in the form of gamma rays and who knows what else that we don't know about. They don't just absorb everything while never releasing any energy. So when you think about it they aren't all that different from other stuff in space except for the fact that they absorb light and other weird things.
I call it a Hawking Hole.
Her name was Shoshonda, and she was a big girl.
Making cute videos and sending probes are two entirely different things.
youre a fucking idiot. you think they chuck those things into space from a big slingshot without making cutesy simulations based on hard math first?
Stop Computers/Cars Analogies on S
Like this ----> . Just a whole lot bigger.
Once you came near the event horizon (given current technology) you would more than likely be dead...
Not necessarily. Supermassive black holes' radii are so large that gravitational shear is something you probably wouldn't even notice as you passed through the event horizon. Entire human generations on a planet or spaceship could potentially be born, live out their lives, and die naturally, all while within one of these monsters, before the effects of gravity were to tear them apart.
It would look black~
The Kruger Dunning explains most post on
Depends on the size of the black hole. For a large black hole you would make it past the event horizon before the gravitational gradient is strong enough to tear you apart.
We hope your rules and wisdom choke you / Now we are one in everlasting peace
You'll probably be eaten by a grue.
Defy this cruel fate! "Frotz" a Grue today!
Bow-ties are cool.
Did anyone else expect the video to lead into this at the end? http://www.youtube.com/watch?v=wRhPM2wMzH8 Just checking.
You're quite correct that making a video and sending a probe are two entirely different things. I somehow doubt that the video took a few hundred million to make, while still providing a potentially useful visualization of something that I somehow doubt we'll witness first hand.
It is pitch black. You are likely to be eaten by a grue.
Reaching a black hole is not impossible with current technology, but it is beside the point.
Yes it is. It would take millennia if not millions of years to reach the closest black hole with current technology. We can't build anything that would be able to power itself for that long, nevermind that humanity would most likely be extinct by the time we reached it.
Well, good thing then that we're working on building our own locally. Anyone care for spaghetti?
Oh, say does that Star-Spangled Banner entwine / The myrtle of Venus with Bacchus's vine?
I don't get this, why do astrophysicists only use general relativity for their calculations. I thought a singularity was an infinitely dense point, something quantum physics rules out as impossible.
Greg Egan's website has a little Java applet to visualise what happens to light around a black hole, dated 2001.
He's got a bunch of other fun stuff there, explaining/"demonstrating" the strange physics (real and theoretical) used in his books and stories.
Considering that a black hole is more massive than the sun, then it will take longer to fall into the black hole than for the earth to fall into the sun and the sun will go nova before the simulation ends...
Excuse me, but please get off my Pennisetum Clandestinum, eh!
yourmom
I thought with a supermassive black hole, the tidal forces at the event horizon are not that great, so that a person might pass through and not even know it if there was not much matter nearby (granted, unlikely for a supermassive black hole)
The Microsoft R&D division.
Have gnu, will travel.
What a cliffhanger. Just when it gets interesting it stops! I hope "Falling into a Black Hole II - The Sequel" comes out soon.
-- Cheers!
What happens in a black hole stays in the black hole.
God spoke to me.
Well, if they want to mutilate the language of my profession like that, I shall build a research based on an algorithm.
Rampant carbon sequestration destroyed the Dinosaurs' tropical paradise. I'm here to help repair the damage.
Spaghettification. Let me guess. I can see only two options: one -- due to the bizarre effects of the intense gravitational pull, and because we're entering a region of time and space where the laws of physics no longer apply, we all of us inexplicably develop an irresistible urge to consume vast amounts of a certain wheat-based Italian noodle conventionally served with Parmesan cheese; or two -- we, the crew, get turned into spaghetti. I have a feeling we can eliminate option one.
Mmmm, nearly lunchtime.
Rampant carbon sequestration destroyed the Dinosaurs' tropical paradise. I'm here to help repair the damage.
Yeah, good luck with producing anything besides hypothetical micro singularities that don't evaporate in a picosecond. There isn't enough power in the entire solar system to create a real black hole.
I can report with certainty that this was rendered (or at least CAN be rendered) on a modern laptop; I attended Professor Hamilton's course on Black Holes in which he used the Black Hole Simulator. It ran at this quality in real-time (including changing angles, time dilation, and different types of black holes) on a 2005 Alienware laptop running Gentoo.
Please help me pay for room & board.
Very black.
All your mass are belong to us!
now we need to go OSS in diesel cars
What you said is 100% correct, but there is a LOT of radiation that is deadly to humans associated with the in-falling matter that is falling in.
Fall in
Once you came near the event horizon (given current technology) you would more than likely be dead, so this is a pretty pointless video...
Well unless you're equipped with an oxygen supply, heat-resistant tiles and a serious acceleration compensator I would suggest you avoid, at all costs, using Google Earth.
"Nine times out of ten, starting a fire is not the best way to solve the problem." - my wife
Was the best movie of all time.
The real question is: What happens when you fall into black hole and turn on a flashlight there?
Everyone involved would be pretty dead if the train was moving at speeds fast enough to introduce relativistic effects perceptable by the ordinary senses, yet the illustration aids in an understanding of the physics.
Speed does not kill, acceleration does. If you accelerate the "train" at 1g, it would take only one year to reach about 0.77c, more than enough to see relativistic effects.
Hamilton and Polhemus built a computer code based on the equations
The use of the word "code" in that manner is slightly unusual but is actually quite in line with the accepted meanings of the word code.
AWESOME!!
An anonymous comment that relies upon particular assumptions that are forbidden by the nature of the scenario. Like a train traveling through a vacuum, so that the train isn't destroyed by atmospheric resistance and the external observer isn't killed by the shockwave -- but the vacuum can conduct lightning. Like a train traveling in a straight line at 0.77c, so that centriptal forces and acceleration are unnecessary -- a space train struck by lightning. Nevermind that you've missed the entire point, that the situation is hypothetical, yet assumed the existence of hypothetical technology that can accelerate at 9/8 m/s/s for a year in a vacuum. The first example is due to speed. The second example is due to an unaccounted for acceleration. Both kill. Pick that nit. Nitwit.
Reaching a black hole is not impossible with current technology, but it is beside the point.
Yes it is.. It would take millennia if not millions of years to reach the closest black hole with current technology. We can't build anything that would be able to power itself for that long, nevermind that humanity would most likely be extinct by the time we reached it.
Falling into a black hole does not allow you to see the end of the universe. (The FAQ I linked to discusses one case in which a perfectly symmetric, rotating vacuum black hole does experience infinite blueshift, but the existence of matter or quantum gravity effects very likely destroy that property of the black hole.)
Speed does not kill, acceleration does. If you accelerate the "train" at 1g, it would take only one year to reach about 0.77c, more than enough to see relativistic effects.
Speed kills if you run into a "stationary" particle at 0.77c.
...what happens in the singularity stays in the singularity.
Hmm, I think you missed the beginning of the lecture. That was actually him doing a stage-1 install...
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Maybe so, but who can verify the video is accurate? Though I've never actually fallen into a black hole, I have no reason to believe that it would look like a crappy Geiss clone.
Perhaps replace the hum-drum voiceover with a kickass techno track? That usually works for Geiss, maybe through some quantum audio wave thing it would also work for the black hole.
Andrew Hamilton also made HD versions used in a planetarium show, a NOVA program, and a program on National Geographic. We do hope to get many more people interested in science, as well as improve our understanding of black holes.
These visualizations can be done, in HD, on Andrew Hamilton's laptop in a few minutes of computing time.