May 12, 200719 yr No dude, I mean, I understand black holes don't move through time, they dilate time due to their gravity, etc, but how is it that they move through space if they slow down everything around them so much? You'd think they'd have to be moving infinitely fast to move at all in an infinitely slow part of space.
May 12, 200719 yr Ahh, even more complicated. We're edging towards mine own event horizon - I'm not sure about this, so I'll... guess. ^^ It's time dilation again. It in fact does take the black hole an infinite amount of time to travel even a short distance - from... its own point of view. But from our point of view, it travels at a much higher speed. Relativity again. I'm probably close here. We're not totally out of my expertise, but we're dang close. >_>
May 12, 200719 yr Well, I only read up to about page 4 of this thread and had a few things to add. What would happen if I snapped my fingers and the sun was instantly turned into a black hole (still only 1 solar mass in size)? Would the earth be suddenly sucked in? No, we would continue to orbit just as we do now, only it will get awful cold. When calculating things like orbits of planets around a central body, the only relevant information needed is the mass of the 2 bodies invloved, not their density, size etc. Now these orbital calculations break down for black holes as you get closer to them because of the extreme bending of space-time. There are also different types of black holes: static, rotating, charged. Depending on the type there are multiple photon spheres (read the site for what photon spheres are) and you can even get the singulatiry outside the event horizon :shock: . This website has some pretty good discriptions of the different types of black holes as well as what happens if you were to try and "drive" into one and lots of good info on black holes in general. A lot of the discriptions of black holes involve general relativity which I am no good at. The whole tensor math and non-eculidian (sp?) geometry make my head hurt, but it is terribly interesting to hear about. (please excuse andy spelling and grammer errors, I was a physics major, not english)
May 12, 200719 yr Edit @696: "Gravity waves". No. You can't detect gravity like that. However, you're on the right track. It's all about X-rays, radiation, inexplicable behavior of heavenly bodies, etc. Actually, trust me on this one. It's extremely tricky to build equipment sensitive enough to do it but it is possible to detect the gravitational waves radiated by a black hole when it collapses in the first place (a black hole has no hair, so any deformities in the stars surface would be radiated away as gravitational waves, ripples of spacetime) or when two black holes merge. I'd just like to give a short holler out not specifically to this guy, but everyone to stop [bleep] insulting people for no reason. I was reading your post, and you were explaining things fine. Then you got onto explaining about googols, and to be honest, I didn't know the spelling, so it was nice to see it. But then... I mean, what was the point of that? Honestly? Edit: Whoops, didn't even see you said it earlier in your post as well. Dude, calm down. It doesn't make you look cool or any better in the argument; there's no [bleep] point in it. I hate arrogance, especially patronising arrogance. and you can even get the singulatiry outside the event horizon :shock: . That's still highly debated, Roger Penrose provided a fairly reasonable proof that a singularity would always be within an event horizon. See 'cosmic censorship hypothesis' for more details. "Da mihi castitatem et continentam, sed noli modo"
May 12, 200719 yr Please, don't spam. We know the image is photoshopped. If you'd taken two freaking minutes to read at least a page or two, you'd know we're now onto a discussion on black holes in general.
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