Black hole's spin measured accurately for first time. Spoiler: It's fucking fast
69 replies, posted
sweet, now figure out how to harness the spinning massive gravity field and you have probably a near infinate powersource
[QUOTE=Sableye;39802289]sweet, now figure out how to harness the spinning massive gravity field and you have probably a near infinate powersource[/QUOTE]
You just said "harness gravity". I'm still trying to process that.
It's still dangerous to be around, right? You couldn't possibly slingshot around a black hole without receiving major flack from the surroundings being pulled in/slung about as well
[QUOTE=its shortie;39800391]If you weren't liquified by the amount of G's you would be pulling, sure.[/QUOTE]
Nah, you'd be broken down into more than a liquid I'm sure.
[editline]4th March 2013[/editline]
[QUOTE=JohnnyMo1;39801606]woah dude... ALGEBRA[/QUOTE]
I think the symbols are what get to people, even if the math is simple.
[QUOTE=JohnnyMo1;39802019]I just meant the shape of the event horizon really[/QUOTE]
It's a black disc.
[editline]4th March 2013[/editline]
[QUOTE=Sableye;39802289]sweet, now figure out how to harness the spinning massive gravity field and you have probably a near infinate powersource[/QUOTE]
This will not happen in your lifetime.
[QUOTE=Falubii;39803048]
It's a black disc.
[/quote]
Black holes are 3D.
Are they now? I thought we lived in two dimensions.
[QUOTE=Water-Marine;39803036]It's still dangerous to be around, right? You couldn't possibly slingshot around a black hole without receiving major flack from the surroundings being pulled in/slung about as well[/QUOTE]
It's just like getting a gravitational slingshot from a planet, except the planet is incredibly massive and dense.
[QUOTE=Dr. Deeps;39800367]So, correct me if I'm wrong, but would we be able to like, idk, skirt around the edge and use it as a "catapult" to go really fucking fast basically?[/QUOTE]
If you aimed at the ergosphere at the right angle, then theoretically, yeah. One wrong move on the slightest, tiniest level and you're fucked entirely, though. Black holes are nothin' to dick around with
:v:
Edit:
I had a physics test today on black holes and these exact concepts, and now it's more relevant. Yay!
[QUOTE=its shortie;39800391]If you weren't liquified by the amount of G's you would be pulling, sure.[/QUOTE]
Or by the flak and radiation. It's unlikely that your dinky little ship is the only thing orbiting that thing at a fraction of the speed of light.
[QUOTE=Falubii;39803048]It's a black disc.[/QUOTE]
It looks like the accretion disc is not coplanar with the equator, which is incorrect.
If you go into a black hole and look left or right, you'll see the back of your own head.
trufax
[QUOTE=JohnnyMo1;39803874]It looks like the accretion disc is not coplanar with the equator, which is incorrect.[/QUOTE]
The whole picture seems kind of wrong, unless black holes can spin so much as to look like an ellipse.
[QUOTE=Big Dumb American;39800680]I think I saw this in that Stephen Hawking documentary about the universe. He explained that, if you could find exactly the right distance, angle, and speed to approach the black hole without being pulled into its gravity well, you could orbit it at near the speed of light and travel forward in time.[/QUOTE]
This is by far my favorite time travel theory. Orbiting a black hole, god damn.
[media]http://www.youtube.com/watch?v=i0cVdPHOIxw[/media]
[QUOTE=Dr. Deeps;39800367]So, correct me if I'm wrong, but would we be able to like, idk, skirt around the edge and use it as a "catapult" to go really fucking fast basically?[/QUOTE]
If memory serves correct gravitational slingshots only ever allow the object performing one to leave with twice its original momentum, and unless you're making a rescue mission or something while pulling one off you won't be gaining any mass, so in layman's terms a gravitational slingshot only allows you to DOUBLE your speed.
... if memory serves correct.
[editline]5th March 2013[/editline]
Memory serves me incorrectly, apparently. The object performing a gravitational slingshot gains twice the velocity of the planet/star/blackhole/whatever that it's used to slingshot itself.
[QUOTE=Tea Guy;39803650][media]http://www.youtube.com/watch?v=eI9CvipHl_c[/media]
Depressing.[/QUOTE]
Wooooooow, thank you very much for this video. Now I'm watching every vid on this awesome channel. I'm a sucker for interesting scientific stuff that makes my brain malfunction.
Imagine a washing machine that could spin that fast...
[QUOTE=Yahnich;39805652]so clean even the washing machine disintegrates and disappears[/QUOTE]
or it travels through time and your clothes are ready as soon as you hit start.
[QUOTE=Pat.Lithium;39805737]or it travels through time and your clothes are ready as soon as you hit start.[/QUOTE]
What if I climb into the washing machine?
Could someone convert that into rpms?
[QUOTE=Big Dumb American;39800680]I think I saw this in that Stephen Hawking documentary about the universe. He explained that, if you could find exactly the right distance, angle, and speed to approach the black hole without being pulled into its gravity well, you could orbit it at near the speed of light and travel forward in time.[/QUOTE]
Yep, this is true. It's called [url=http://en.wikipedia.org/wiki/Time_dilation]time dilation[/url]
It was also a plot mechanic in the original Planet of the Apes.
[QUOTE=Dacheet;39800773]
You know I've entered the weird part of Wikipedia when you see math like this
[t]http://puu.sh/2cfxP[/t][/QUOTE]
What's weird about this? If anything, the math behind special relativity is easy compared to other physical phenomena.
[QUOTE=Falubii;39804462]The whole picture seems kind of wrong, unless black holes can spin so much as to look like an ellipse.[/QUOTE]
The event horizon will still be spherical though the ergo sphere will look like an ellipse
[QUOTE=Dacheet;39800773]
You know I've entered the weird part of Wikipedia when you see math like this
[t]http://puu.sh/2cfxP[/t][/QUOTE]
that's the relatively tame part of wikipedia, as math goes
[QUOTE=JohnnyMo1;39807429]The event horizon will still be spherical though the ergo sphere will look like an ellipse[/QUOTE]
Would the ergosphere be entirely black though?
[QUOTE=Dr. Deeps;39800367]So, correct me if I'm wrong, but would we be able to like, idk, skirt around the edge and use it as a "catapult" to go really fucking fast basically?[/QUOTE]
prepare to be [url="http://en.wikipedia.org/wiki/Spaghettification"]spaghettified[/url]
black holes actually make a distinct sound too, have a listen
[media]http://www.youtube.com/watch?v=hU7EHKFNMQg[/media]
[QUOTE=Dacheet;39800421]Assuming you wouldn't get sucked in (by maintaining a safe distance from the [url=http://en.wikipedia.org/wiki/Event_horizon]Event Horizon[/url]), you would indeed go really fucking fast.
To a lesser extent, we use this already by doing what's called a [url=http://en.wikipedia.org/wiki/Gravitational_slingshot]gravitational slingshot maneuver[/url] to get probes into deep space.
e: one of the probes that used this to overkillingly amazingness is the Cassini-Huygens probe with 4 assists to get to Saturn
[img]http://upload.wikimedia.org/wikipedia/commons/b/bd/Cassini_interplanet_trajectory.svg[/img][/QUOTE]
Huge nerd
[QUOTE=Falubii;39807824]Would the ergosphere be entirely black though?[/QUOTE]
Nope. So the picture is quite inaccurate. :v:
[QUOTE=booster;39804530]This is by far my favorite time travel theory. Orbiting a black hole, god damn.
[media]http://www.youtube.com/watch?v=i0cVdPHOIxw[/media][/QUOTE]
that was on TV last night
I think that's probably the best CGI representation of a black hole out of all these shows about them yet
[QUOTE=Tea Guy;39803650][media]http://www.youtube.com/watch?v=eI9CvipHl_c[/media]
Depressing.[/QUOTE]
That guy sounds really creepy and scares me
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