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I dont really understand this theory of "information" in the event horizen of a black hole. What could be the purpose of nature for that to occur?

2007-02-13 16:09:20 · 6 answers · asked by Anonymous in Science & Mathematics Astronomy & Space

6 answers

The answer to your question is, yes, the event horizon contains information. The area of the event horizon is directly proportional to the amount of entropy, or disorder, within the black hole. Also, the larger the event horizon, the larger the black hole within it - or the greater amount of mass that has succumbed to the black hole.

There is no purpose for this, it just is.

2007-02-13 17:19:11 · answer #1 · answered by squang 3 · 0 0

This gets into some pretty intense stuff that would take many years of research to fully understand (which I don't have), but I can explain the gist of it. Hawking proposed a way that black holes evaporate over time. First, you need to know a little background about these things called virtual particles. Quantum physics predicts that tiny particles pop into space and disappear almost instantly. These particles appear in pairs. An antiparticle appears with each particle and they annihilate each other rather quickly. Now, what happens if these two particles are created on the event horizon of the black hole. Imagine that the antiparticle gets sucked into the black hole and the other particle remains outside of the black hole. This once virtual particle is now a real particle. Because matter/energy can't be created or destroyed, the black hole must have lost some energy! This is how you could gain back all the information lost in the black hole. For large black holes this take billions upon billions of years, but for tiny microscopic black holes (which are predicted), they evaporate almost instantly and no one sees their effects. In fact, there's probably a black hole really close to you right now. Don't worry though, because it was gone as soon as it appeared.

2007-02-13 16:24:25 · answer #2 · answered by Chris S 3 · 0 0

If a black hole could exist it would have to destroy any information that crossed it's event horizon.
The event horizon would be a one way membrane that would not return anything from it's interior.
The idea of virtual particles usurping the event horizon will not hold up to logic.
There would be no purpose for it to give up information that it had destroyed.
The black hole is a theoretical [logical] entity that cannot hold up to a purely objective scrutiny.

2007-02-14 09:02:46 · answer #3 · answered by Billy Butthead 7 · 0 0

In so much to say a string of light can be read as a history of it's source, like the grove on a record, then a string of light compressed into an event horizon could be pulled out like unraveling a sweater. Analog data is fairly resiliant to compression, and I would expect the data to contain a history of stellar activity. To read it you would only need to oppose the gravity of the event horizon, not enter it. As the gravity's effect on the EH increased, the further back in time the escaped material. It would be just like playing back a record backward!

To clarify, stellar radiation from day 1 enter first enter the EH, then day 2, day 3, and so on. When gravity pulls on the EH's edges, the first material freed from the hold would be the last data in. From there it would (again an analogy) like peeling an onion. As the (counter-) gravity incrases, the further back in time the released material originated from. Looking at that material could tell you the details about Stars and their History. Good Luck!

2007-02-13 17:08:10 · answer #4 · answered by Brian L 4 · 0 0

Don't look for purpose in science. Have a look at the varying views on "gravastars", "collapsars" and the misnamed "black holes" at the Wikipedia website. Professor Stephen Hawking, who popularised the so called "event horizon", in the bestseller "A BRIEF HISTORY OF TIME", has stated that he no longer accepts that such a thing could possibly exist, as it is against the laws of physics. He has now joined a large and growing group of scientists who agree with that viewpoint. For an explanation that anyone with high school physics can understand, go to the blog of Jack Norton-Krell at www.myspace.com (http://www.myspace.com/67273704)

2007-02-13 16:37:10 · answer #5 · answered by CLICKHEREx 5 · 0 0

The event horizon is where no light can escape. If no light can escape I do not see how anything else can. If nothing can escape, then how can you get any information?

2007-02-13 16:15:35 · answer #6 · answered by eric l 6 · 0 0

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