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Black holes are confusing!
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Posted 2/10/13
I'm going to put this in simple terms, a black hole is a massive hole in space which has no mass, but has, in theory infinite volume, the event horizon marks the point of no return and reflects all like, making a black hole the perfect black body, both the actual black hole and the event horizon give of radiation, this is not all correct because there's thousands of different theories on it, this is just my knowledge on the subject
Posted 2/10/13
What has no mass. The amount of mass is what creates it to begin with.
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Posted 2/10/13
Big Booty Bitches
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Posted 2/11/13
Doesn't a black hole pull in every directon equally? it presnents itself as the same from everydirection it's observed. There is something there. We just done know what "it" is. What id it's just a Super neutron star collapsed down even farther. I 've always wondered how it can have greater gravity than it's original starting object? Technically photons are there. If they weren't then gravity couldn't pull on them. I want to know what black holes do with all the crap the swallow. Hawking thought they crush matter out of existence. He then "bakced" off because science went all twitchy on him. So he altered that and said it goes to an altenate universe or something. Now science isn't twitchy anymore. There will come a day hopefully when we can cheat physics and see what;s in there. until then it's all guessing..
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Posted 2/11/13 , edited 2/11/13
Just ask Dr. Google: google.com xD
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Posted 2/11/13
I was a black hole once in my youth, those times was rough.
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Posted 2/11/13 , edited 2/12/13

ForsakenAngel wrote:

I'm going to put this in simple terms, a black hole is a massive hole in space which has no mass, but has, in theory infinite volume, the event horizon marks the point of no return and reflects all like, making a black hole the perfect black body, both the actual black hole and the event horizon give of radiation, this is not all correct because there's thousands of different theories on it, this is just my knowledge on the subject


A black hole has mass in one sense. Mass is the invarient which generates gravitation, in the same way that charge generates electric fields. Technically the hole part of it occupies zero volume for a stationary black hole, people typically say that the event horizon is part of the blackhole and use that to say that the blackhole has volume, itsn ot true. The event horizon is simply an optical limit and nothing more, its not physically part of the blackhole. It is also no the perfect black body at all since it still radiates but it's about as good as macroscopic objects can get



homerj89 wrote:

Doesn't a black hole pull in every directon equally? it presnents itself as the same from everydirection it's observed. There is something there. We just done know what "it" is. What id it's just a Super neutron star collapsed down even farther. I 've always wondered how it can have greater gravity than it's original starting object? Technically photons are there. If they weren't then gravity couldn't pull on them. I want to know what black holes do with all the crap the swallow. Hawking thought they crush matter out of existence. He then "bakced" off because science went all twitchy on him. So he altered that and said it goes to an altenate universe or something. Now science isn't twitchy anymore. There will come a day hopefully when we can cheat physics and see what;s in there. until then it's all guessing..


For a stationary black hole it does look isotopic (same in all direction s) but most blsckholes are spinning which presents and effect known as frame dragging, this means that you can quite easily spot a blackhole if your in the correct planar orientation through its gravitational lending.

Protons do not exist inside a blackhole, they aren't fundamental particles so at such high energies they break down, even in neutron stars there are no protons. As for photons, there's a debate, most think they exist on the surface of the event horizon but no one knows a out inside it, even if they do exist its meaningless since their never getting out, Also gravity doesn't pull photo s, that's completely missing the point of relativity, it just bends the space the photo s exist in, just like driving on a straight road your technically driving on a curve due to the spherical nature of the earth

If a star becomes a neutron star it will not become a blackhole, the two are vey different.

A blackhole does not have any more mass or outward gravitation than the parent star that generated i
What Hawkins initially though about was that mass was conserved but information of, that's a bit of a pr Len and if true makes he entirety of causality worthless, which makes no real sense



UltimateUnknown wrote:


Ihateyou1234 wrote:



Are you a fucking rocket scientist?


No. He has probably done a course in general relativity and cosmology. Tensors are the maths that you learn when you do general relativity.

As for light cones, you come across them when you study the evolution of the universe, which falls mostly under cosmology. So he is very far from a rocket scientist, who don't have much of anything to do with this subject matter lol.

Anyway, I am not a specialist in this topic since my specialization is more towards spectroscopy of stars. I did take a course this year (3rd year in university) in cosmology and you really do need to do GR to be able to fully understand how black holes and in general spacetime works. Add to that some knowledge of special relativity, which leads to even more maths in matrix mechanics, etc.

So yeah. Fortunately or unfortunately for the OP, your question to be answered in its entirety requires some pretty high level mathematics. But if you are interested, I would definitely recommend you take up the subject in whatever level you are at right now and develop yourself.


Actually I've never done a specific cosmology course, it always had too much hand waving and vague explanations for a mathematical Theorist like me. I have done a couple of courses related to his though, continuum mechanics, special relativity, radiation and relativity as well as general topology which all kind of meld into the field. I care about it from a purely theoretical background and really could care less about the qualitative detail, that said most physicists who actually do experiments would probably disagree with me I that one
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Posted 2/12/13
Im black. Hope this helps.
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Posted 2/12/13

kalvinh wrote:

Im black. Hope this helps.


The new pope?

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It's literally been over a half a year, plus 2 months since this was last posted in. Feel free to recreate if you so desire. Closed due to inactivity.
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