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Fast-Moving Black Hole
otisaardvark writes "New Scientist story about a very fast moving Black Hole in our very own Galaxy. Seems it was formed from a supernova explosion. I wish stars like this could have a more exciting name than GRO J1655-40 though. More at the BBC."
Merging Black Holes
Yep, if we ever got close enough to a black hole, it would be the solution to global warming, corruption in government, freedom on the Internet, minority rights, energy production, and pretty much every other petty human problem you can think of.
I've had enough abrasive sigs. Kittens are cute and fuzzy.
I can think of a couple ways to use a black hole to generate power. Rotating black holes have huge amounts of kinetic energy, and such a hole that had an electric charge could be used as a huge generator, if we could get an electric field large enough to surround it.
The other method uses very small holes, about the size of a proton with the mass of a mountain. Due to Hawking radiation, such a hole would put out more power than a six nuclear power plants (if I remember the statistic).
I know lots of things. Most of them are wrong.
I've read that if you could get close enough to a black hole, and you threw something into it that was attached to a cord strong enough, the black hole will pull the matter into in, thereby pulling the cord, which in turn can be hooked to a turbine to produce electricity. The book (The Last Three Minutes) says that theoretically, you could get energy consistant with e=mc^2 this way.
"Ask not for whom the bone bones. It bones for thee." --Bender
Your levity cant stand up under the gravity of the situation.
yeah yeah, -1, bad puns.
All Troll + "offtopic" mods are meta moderated as "Unfair", because you abused the system.
Im not so sure that this is really practical in the sense you meant, but just being near a large enough blackhole would provide a simple one way time machine (cf twins paradox).
Thoughts on tech, Software Engineering, and stuff
Black holes the size of protons would evapourate in seconds, due to the hawking radiation, and somehow I don't think you want to get too close to a large one. I'd love to see someone try, though, that would be a great stunt to see on Jackass.
You may not agree with what I'm saying but I'll kill you for my right to say it
Remember, in science, no theory is ever actually correct, merely proven to be beyond reasonable doubt.
You may not agree with what I'm saying but I'll kill you for my right to say it
Of course it is just gravity. The important thing is that it has *a lot* of gravity. Drop your weight from 1000 feet over a black hole (if you could get that close) and you'll get a lot more energy than if you dropped the same weight off a 1000 foot cliff here on Earth.
"Ask not for whom the bone bones. It bones for thee." --Bender
except of course that ever present once we get inside cuasality could be violated and then your food keeps getting warmer and uncooking itself if you don't hurry up and eat it
:)
What a pain
1) The black hole has a companion star, so wouldn't a kick of that magnitude tear it away from its companion and preclude it from acquiring another until it slows?
2) Even ignoring the mass of the companion, the estimates are that the BH is about 7 solar masses. That means that the BH has acquired a kinetic energy of 1/2 * 7 * (2^30 kg) * (10^5 m/s)^2 = about 10^41 J of energy, which is about 1/1000 of the energy of the SN explosion (10^51 erg = 10^44 J). To me, that seems like an exceedingly large fraction of a roughly isotropic explosion converted into motion. It gets even worse if you throw in the mass of the companion.
Anyone have any insights into how this can happen?
I think a black hole ate the periods in your sentences.
I wish stars like this could have a more exciting name than GRO J1655-40 though.
Yeah, J1655 is such a jerky middle name!
But you still need an infinite rope to get continual energy.
I've had this sig for three days.
So use the energy to constantly build more rope onto its end, with some nanotech procedure.
Don't think that even this allows for "perpetual motion", but could be fun all the same.
Did you ever see that one Pinky and the Brain? They created miniature Black Holes in a jar and sold them as garbage disposals, i don't remember how this tied into their plot to take over the world, bum bum bum... [insert theme song]
"Sic Semper Tyrannosaurus Rex."
Remember, in science, no theory is ever actually correct, merely proven to be beyond reasonable doubt.
Ladies and Gentlemen of this supposed physics journal..
I have one final thing I want you to consider. Ladies and Gentlemen this is Chewbacca. Chewbacca is a Wookie from the planet Kashyyyk, but Chewbacca lives on the planet Endor. Now think about it, that does not make sense. Why would a wookie, an eight foot tall wookie, want to live on Endor with a bunch of two foot tall Ewoks? That does not make sense! But more importantly you have to ask yourself, what does this have to do with physics? Nothing. Ladies and Gentlemen it has nothing to do with physics! It does not make sense! Look at me, I'm a lawyer, defending the laws of gravity, and I'm talking about Chewbacca. Does that make sense? Ladies and Gentlemen, I am not making any sense. None of this makes sense. And so you have to remember when you're on that physics panel deliberating and conjugating the Principia, does it make sense? No! Ladies and Gentlemen of this supposed panel, it does not make sense! If Chewbacca lives on Endor you must acquit.
The defense rests.
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- - You can't take something off the Internet! That's like trying to take pee out of a swimming pool.
I've always liked the slow black holes. They come meandering towards you like a sloth and are easy to sidestep around.
Trolling is a art,