White Holes... Fact Or Fiction?

[TimeTraveler]

I am a new member, I don't know if you guys already discussed this but ill ask anyway. Do you guys belive in White Holes? If you don't know what a white hole is i'll explain. It is the "negative" of a black hole. A white hole is supposed it be on the back of a black hole. The black hole and the white together are supposed to make a wormhole. Here is the problem with the white hole, if it exists then there are parellel universes and negative masses. So please reply.

[Littlemews]

Yes White Hole do exist.. as we know this : black hole sucking energy, but white hole give out energy...Wormhole is in between BH and WH...if u using Einstein's equation, u will know if u pass the wormhole, then u are in different universe..but however is so rare to find one.

[Matthew]

Ah, there is no proof to say there are white holes. There is nothing that holds them tpogether, exept for maybe the gravity of the black hole counterpart.

[Littlemews]

Originally posted by matthew@Dec 24 2003, 12:47 AM
Ah, there is no proof to say there are white holes. There is nothing that holds them tpogether, exept for maybe the gravity of the black hole counterpart.

Who knows, the universe is too big, maybe there is one exist...

[damienpaul]

the universe is indeed vast, and not to mention complex - as Littlemews said it is hard to conclusively say what does or does not exist. It seems logical that as black holes take then white holes give - the whole give and take that appears o much in physics

[Matthew]

the universe is indeed vast, and not to mention complex - as Littlemews said it is hard to conclusively say what does or does not exist. It seems logical that as black holes take then white holes give - the whole give and take that appears o much in physics

It is hard to conclusively say what DOES exist as well.

[Fraser]

Just because the math predicts that a wormhole could exist, doesn't mean they actually do. The math helps give astronomers some places to look, and some phenomena to watch out for, but other than that, it's still all theoretical.

But then, that's what people were saying about black holes, and now the evidence is quite compelling that they exist.

[Littlemews]

oh now u remind me, I do hear alot of people talking about BH, but never hear anybody talk about WH, WormHole, and Empty Hole....

[damienpaul]

what is an empty hole?

[Littlemews]

Originally posted by damienpaul@Dec 25 2003, 02:55 AM
what is an empty hole?

Empty Hole, an area that has less particles in the universe...

[damienpaul]

ah thank you for that.....i was thinking of a council trench with no workers in it...

[fortyseven]

for me a wormhole has an entrance and an exit and they aren;t black and white holes.

A whitehole would have 0 mass and 0 gravity within its event horizon as blackholes have infinite mass and gravity inside their event horizons. Time would pass at infinite speed inisde the whitehole's event horizon just as time is stopped inside a blackhole's event horizon.

A whitehole would be an energy fountain spewing vast amounts of energy.

maybe quasars are whiteholes

[lazserus]

maybe quasars are whiteholes

There's still the problem of exotic matter with negative energy density. This is needed to keep a white hole open. We can detect the energy from quasars, thus we technically should be able to detect our negative energy density particles.

I'm pretty skeptical about the existence of white holes. It doesn't fit with the theory of singularities, thus it wouldn't make much sense to be on the other end of a black hole. And how come black holes are quite frequent, but there's absolutely no evidence supporting white holes? Are they just coincidentally out of our range of the observable universe?

[Littlemews]

Originally posted by lazserus@Jan 1 2004, 04:40 AM

maybe quasars are whiteholes

There's still the problem of exotic matter with negative energy density. This is needed to keep a white hole open. We can detect the energy from quasars, thus we technically should be able to detect our negative energy density particles.

I'm pretty skeptical about the existence of white holes. It doesn't fit with the theory of singularities, thus it wouldn't make much sense to be on the other end of a black hole. And how come black holes are quite frequent, but there's absolutely no evidence supporting white holes? Are they just coincidentally out of our range of the observable universe?

[QUOTE]I'm pretty skeptical about the existence of white holes. It doesn't fit with the theory of singularities, thus it wouldn't make much sense to be on the other end of a black hole. And how come black holes are quite frequent, but there's absolutely no evidence supporting white holes? Are they just coincidentally out of our range of the observable universe?[/Quote[

Hmm very intereseting...but let me ask u one question. I assume that the Black Hole is a human being, and BH eat foods for energy, but does the food stay in its body forever?

Black Hole as the Mouth
Worm Hole as the Stomach
White Hole as the :P u know what I mean

Balck Hole take away energy, but white hole release energy.

[lazserus]

You're concerned with the conservation of energy? A black hole doesn't just swallow things. Normally a black hole is a partner in a binary system and it slowly feeds off of the partner star. With this in mind, you can't ignore Hawking radiation (which is an output of energy from the black hole) or the streaming jets of charged particles that every black hole emits. These are both forms of returning the energy they've stolen. With known conservation laws, nothing can be taken, only borrowed - but using that logic, we don't necessarily have to give what we borrow back to the one we took it from.

[Littlemews]

Originally posted by lazserus@Jan 1 2004, 05:12 AM
You're concerned with the conservation of energy? A black hole doesn't just swallow things. Normally a black hole is a partner in a binary system and it slowly feeds off of the partner star. With this in mind, you can't ignore Hawking radiation (which is an output of energy from the black hole) or the streaming jets of charged particles that every black hole emits. These are both forms of returning the energy they've stolen. With known conservation laws, nothing can be taken, only borrowed - but using that logic, we don't necessarily have to give what we borrow back to the one we took it from.

<_< <_< then that means there is no WH exist in the universe

[lazserus]

then that means there is no WH exist in the universe

That&#39;s what I&#39;m implying. Of course we can&#39;t prove that, but we also can&#39;t prove there&#39;s not an invisible purple elephant sitting under your kitchen table.

[Sp1ke]

There is a problem with linking a black hole to a white hole (as two ends of a wormhole) since you&#39;d be infinitely compressed on entering the black hole, as well as taking an infinite time to cross the event horizon. But IIRC a rotating black hole allows you to pass through without invoking infinity. I wonder where would you get to if you passed through the centre of a rotating black hole?

[lazserus]

I wonder where would you get to if you passed through the centre of a rotating black hole?

No where. You&#39;d be torn to shreads from the tidal forces within 8 minutes of passing the event horizon.

[Sp1ke]

Would you be torn to pieces regardless of how fast the hole was rotating and how small "you" were?

[damienpaul]

i&#39;d imagine so, but who knows what is possible, maybe there is a threshhold that we do not know about...maybe that there are properties of that invisible purple elephants that we do not know about.

[Planetwatcher]

QUOTE

I think you would be ripped up in a lot less then 8 minutes. More like 8 nanoseconds. But time and space reverse roles in black holes, so the agonizing pain might seem like 8 minutes before your lights go out for good.

[lazserus]

Would you be torn to pieces regardless of how fast the hole was rotating and how small "you" were?

Rotating or not, you&#39;d be annihilated. In theory, even particles are torn apart by tidal forces as the reach the singularity.

I think you would be ripped up in a lot less then 8 minutes.

Not according to Hawking. The 8 is a little more arbitrary a number, but it&#39;s all somewhere between 6-10 minutes. I think closer to 9.

[damienpaul]

8 minutes of agony...hmmmmm, annhilation....hmmmmm so there is no invisible purple elephant?

[hagg3rty]

White holes dont exisit

and yes we can prove there is no elehpant

[damienpaul]

okay give the proof....

[Littlemews]

I have a question, which is what I am studying now...How does Black Hole release its energy (Teacher&#39;s example.....Bad Energy and Good Energy) in the universe...
Balck Hole keep its good energy as food, and bad energy is some kinda disease, which can cost the Black Hole to stop eating food...so how does black hole release its bad energy...?

[damienpaul]

gamma ray bursts??? i have the faintest idea, except for perhaps the jets that fire off from black holes (and i cannot remember what they&#39;re called)

[Matthew]

Black holes emit radiation as &#39;Hawking Radiation&#39; (because Stephan Hawking discovered it), if you search the forum for Hawking Radiation you should find some information.

[damienpaul]

thats the one i was trying to remember&#33;&#33;&#33; thank you matthew