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Author Topic:   Big bang cycles
tsig
Member (Idle past 2148 days)
Posts: 738
From: USA
Joined: 04-09-2004


Message 31 of 37 (166099)
12-08-2004 2:21 AM
Reply to: Message 30 by The Dread Dormammu
12-05-2004 6:16 AM


Re: Oh, we know!
Well, first of all, we have found black holes with X-ray telescopes.

We know the gravitational tidal forces of a black hole would completley destroy anything that got anywhere near it. Hell, we couldn't even land a probe on a nutron star, let alone a black hole.

It would be interesting to see what happened. We could measured the forces as they tore it apart. Do you think it would be possible to pass informtion thru the event horizon.

My formal college knowledge of black holes was a paper I wrote in a tecnical writing course back when you used typewriters.


This message is a reply to:
 Message 30 by The Dread Dormammu, posted 12-05-2004 6:16 AM The Dread Dormammu has replied

Replies to this message:
 Message 32 by The Dread Dormammu, posted 12-08-2004 3:38 AM tsig has replied

  
The Dread Dormammu
Inactive Member


Message 32 of 37 (166121)
12-08-2004 3:38 AM
Reply to: Message 31 by tsig
12-08-2004 2:21 AM


Information that enters a black hole.
It's interesting that you bring up information:

Do you think it would be possible to pass informtion thru the event horizon.

Keep in mind, the event horizon is a region of space where gravity is so intence that the escape velocity (the speed somthing needs to be moving to escape) is greater than the speed of light. Nothing could escape once it passed that point of no return.

However! As black holes slowly dissolve they do reemit matter in the form of radiation. This is why you may have heard the expression "black holes are realy gray."

The physiscs of how they do this are tricky but I think it has something to do with random particles and antiparticles appearing on the border of the event horizon: One of the particles is lost while the other escapes.

Check out this recent news for more on the "information" that enters a black hole:

http://www.newscientist.com/news/news.jsp?id=ns99996193

"If you jump into a black hole, your mass energy will be returned to our Universe, but in a mangled form, which contains information about what you were like, but in an unrecognisable state."

So the matter from a probe or anything else that enters a black hole will eventualy be reemitted in the form of radiation as the black hole disintrates over billions of years.

It is true that anything that enters a black hole will be hopelessly streach and obliterated (so there is no hope of a probe reemerging whole from inside a black hole). And it is also true that the energy/matter that falls into a black hole will be reemitted as radation.

So are black holes portals to other univereses? I would say, catagoricly no.

Do black holes emit "information" as they decay? (keep in mind physisists are using information in a very specific sense here) The anwswe is... sorta.


This message is a reply to:
 Message 31 by tsig, posted 12-08-2004 2:21 AM tsig has replied

Replies to this message:
 Message 33 by tsig, posted 12-08-2004 3:59 AM The Dread Dormammu has replied
 Message 36 by Dr Jack, posted 12-08-2004 7:03 AM The Dread Dormammu has replied

  
tsig
Member (Idle past 2148 days)
Posts: 738
From: USA
Joined: 04-09-2004


Message 33 of 37 (166124)
12-08-2004 3:59 AM
Reply to: Message 32 by The Dread Dormammu
12-08-2004 3:38 AM


Re: Information that enters a black hole.
So are black holes portals to other univereses? I would say, catagoricly no.

Do black holes emit "information" as they decay? (keep in mind physisists are using information in a very specific sense here) The anwswe is... sorta.

So even if they were portals to another universe, it would seem to be a door forever barred.

Thanks for the info.


This message is a reply to:
 Message 32 by The Dread Dormammu, posted 12-08-2004 3:38 AM The Dread Dormammu has replied

Replies to this message:
 Message 34 by The Dread Dormammu, posted 12-08-2004 4:59 AM tsig has replied

  
The Dread Dormammu
Inactive Member


Message 34 of 37 (166131)
12-08-2004 4:59 AM
Reply to: Message 33 by tsig
12-08-2004 3:59 AM


Re: Information that enters a black hole.
So even if they were portals to another universe, it would seem to be a door forever barred.

Yup, too bad.

In one of my favorite jokes from "Futurerama", Benders girlfriend falls into a black hole.

Fry tries to console Bender by telling him that she "may still be alive in some paralell universe." The professor agrees "Oh yes it's possible" but then whispers to his companion "not a chance."

This message has been edited by The Dread Dormammu, 12-08-2004 05:00 AM


This message is a reply to:
 Message 33 by tsig, posted 12-08-2004 3:59 AM tsig has replied

Replies to this message:
 Message 35 by tsig, posted 12-08-2004 6:06 AM The Dread Dormammu has taken no action

  
tsig
Member (Idle past 2148 days)
Posts: 738
From: USA
Joined: 04-09-2004


Message 35 of 37 (166148)
12-08-2004 6:06 AM
Reply to: Message 34 by The Dread Dormammu
12-08-2004 4:59 AM


Re: Information that enters a black hole.
Yup, too bad.

Well this is my favorite universe anyway so it's not so bad.


This message is a reply to:
 Message 34 by The Dread Dormammu, posted 12-08-2004 4:59 AM The Dread Dormammu has taken no action

  
Dr Jack
Member (Idle past 1345 days)
Posts: 3507
From: Leicester, England
Joined: 07-14-2003


Message 36 of 37 (166157)
12-08-2004 7:03 AM
Reply to: Message 32 by The Dread Dormammu
12-08-2004 3:38 AM


Re: Information that enters a black hole.
Do black holes emit "information" as they decay? (keep in mind physisists are using information in a very specific sense here) The anwswe is... sorta.

I think you'll find the most recent answer is: yes. There's an article about it in the November issue of Scientific American.


This message is a reply to:
 Message 32 by The Dread Dormammu, posted 12-08-2004 3:38 AM The Dread Dormammu has replied

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 Message 37 by The Dread Dormammu, posted 12-09-2004 3:51 AM Dr Jack has taken no action

  
The Dread Dormammu
Inactive Member


Message 37 of 37 (166455)
12-09-2004 3:51 AM
Reply to: Message 36 by Dr Jack
12-08-2004 7:03 AM


Re: Information that enters a black hole.
Did you check out the link I posted. I said "sorta" because the article I read said that it was mangled and unusable.

What's this new development you spaek of?


This message is a reply to:
 Message 36 by Dr Jack, posted 12-08-2004 7:03 AM Dr Jack has taken no action

  
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