Science a GoGo's Home Page Forums General Discussion Physics Forum black holes

what are all the facts about black holes

www.google.com or visit a library or bookstore.

Mr. Woo:

Like the invisible man!

1. We can not see them.
2. We surmise their presence by their apparel.
3. We conclude, by logic, that they are where we think they are by their method of hiding.

I hope that helps!
jjw

the gravity of a black hole is so strong that even the facts about them cannot escape !!!

Some more information please?

Based on what Paul wrote we don't have any.

But Paul is incorrect and you will find a lot of information if you use google.

thats not exactly true DA and you know it.

if there were facts inside of a black the facts could not escape , right?

----------------------------
the more a man knows , the more he realizes how little other people know.

facts are knowledge, knowledge is not limited by phyiscal limitations. gravity could not hold them.

To the best of our knowledge there is nothing inside of a black hole: Absolutely nothing.

Black holes, the astrophyiscal object, intersect with information theory in a very interesting way.

Check out these link:
http://en.wikipedia.org/wiki/Entropy_in_thermodynamics_and_information_theory
http://arxiv.org/abs/quant-ph/0311049 (just the abstract)
http://www.answers.com/topic/black-hole-information-paradox

The critical thing here is that the total amount of information a black hole can contain is defined by not its volume but its surface area. A bit counter-intuitive for humans. So if the surface contains ALL of the possible information ... there is no inside.

Sorry dehammer but your "logical thinking" breaks down inside of a black hole.

DA....

"(our knowledge)" how many people are you today?
or is it that you speak for the entire science community/religion.

science teaches that a black hole is due to gravity , and it teaches that gravity is due to the density of matter.

and it teaches that it is the density of matter inside a black hole that causes the black hole to appear as if there is nothing there due to its gravity being so great that nothing can escape
not even light.

I can only presume that science is only guessing because it has never explored a black hole.

so the teachings of science concerning black holes are not factual they are presumtions.

How many other teachings of science are presumptions?

what causes gravity in your world?
is it something or is it nothing?
you contradict yourself every time you write something , its almost as if you have mpd.

perhaps you were being truthfull when you wrote the following.
because it is a very true statement.
the reason you dont know is because you havent explored one.

dehammer...

dehammer , some peoples brains are so dense that it acts as a black hole and refuses to allow knowlege to escape.

if you and all of your knowledge were inside a black hole could any of your knowledge escape?

I believe it would be more like he would be sucked in and he would surpass the speed of light as he traveled towards the center of the mass , as he traveled he would become elongated , something like an extreamely long piece of spagetti , then he would become a part of the mass , his thoughts would never have time to escape not even time to try and let out a scream.

"it teaches that gravity is due to the density of matter"

No it doesn't.

Paul I'd have responded to each of your points except that IFF summed it up best with respect to just one of your points.

What you have written may have a lot to do with what you think of black holes but it has nothing to do with what science thinks about black holes.

I provided links ... I can't make you read them ... and I am not obligated to provide you with an understanding of what you read.

the thing about black holes is that there is knowledge that can be gained from them. since knowledge is not matter or energy, they cant be contained by a black hole. If I were to be swept into a black hole, i would not have a head to have a brain in it, let alone any knowledge for it to hold. the knowledge that is in there is the evidence of what it is. that is something that gravity cant control.

DA, of everyone here you should have recongized the whimsy of what i said.

I said that gravity was due to the density of matter.

he said

NO it DOESNT.

you said

there is nothing inside a black hole.

so are you saying now that there is something inside a black hole.
or are you just agreeing with someone who doesnt agree with me?
is it mpd or just your choice of who you want to be.

I'll admit that it isnt the density of matter that causes gravity , it is just matter that causes gravity.

this was not a trap , it just turned out that way.

there is some evidence, that what is inside a black hole is no longer matter. this is because even if you take all the space out of the atoms, the amount of space the matterial would take up is more than the black holes have. theortically the atoms would have been converted to energy or something beyound energy.

thanks for the old news dehammer...

it is energy that spews out of a black hole.

if nothing is in a black hole then how did the energy leave it?

this is nothing new.

actually the energy did not leave from the inside, it left from the shell that is the material and energy that is falling into it. Everything that leaves is from the region just beyound the point where gravity is too high for it to escape.

As we get more observations of GRBs and X-ray flashes like these our understanding of Black hole evolution should get nailed down:

http://www.nature.com/nature/journal/v442/n7106/edsumm/e060831-08.html

Interesting article Erich, thanks.
I suspect that every Black Hole might contain a magnetic Monopole . That elusive dense point particle. Never been found, but theory says they should exist. Were there to be a 'loose one flying around' it would bury itself deep within our Earth, or other large planetary body.
Therefore, how much more likely would one, or more, be residing within a Black hole?
Just a thought

Why don't people consider the center of a black hole to comprised of matter. Almost infinitely dense matter. This would be the cause of such a strong gravitational field, and the effect of having atracted so much matter to a finite space.

mainly because it cant be "infinitely dense". the limit is the size of the nucleus of the atom. IF all the electrons are stipped away, AND all the space between the nucleuses were removed, there would be a certain amount of space the matter would have to take up. even if space within the nucleus was removed, it would still have a limit. This would leave the size of the star a few miles in size (for a very large star), which would make it a neutron star. when it turns into a black hole, it gets even smaller than that. Much smaller.

I have read that Black holes could be the most efficient generators in the universe , is that what this study is getting at:

http://scitation.aip.org/getabs/servlet/...&type=ALERT

Here's the free paper:
http://lanl.arxiv.org/abs/gr-qc/0511131

Lots of interesting comments here:
http://arstechnica.com/journals/science.ars/2006/8/4/4887

From what I've read, many physicists reject the idea of atoms disitigrating at an event horizon, for some reason. I think this might have been part of the motivation for hawking's latest "11 paralell universe" theory.

But presuming that atoms, including their nuclei, disintigrate into protons, neutrons and electrons, why should they not then devide into quarks?

perhaps this is the reason the energy is released.

the pressures at the center of the black holes mass squeeze so much on the mass at the center that it converts to energy and escapes.

So we are left with a paradoxical situation. Nothing should escape a black hole, but energy escapes to make way for more incoming matter and light, which could not escape?

it is known that a star can bend light from a star behind it to make it appear as if it were somewhere else.

the bending is due to the gravity of the star that the light is passing.

light can also be bent using a electromagnet such as the one in front of you..the crt.

there is one plausible explanation that I can deliver and that is that the mass has a extremely powerfull magnetic field that will not allow light to escape and the reason the energy is released at its top and bottom is because that is its positive or negative end.

I still believe that there is mass inside a black hole.

the energy is not released from the center, its released from the shell just outside of the event horizon.