Black holes/wormholes

[Dutch90]

I must say I know very little about this; I know black holes form from the collapsing gravity field of a disappeared star or other celestial body, and they are so powerful that they can even absorb light. I.e. if you were "sucked" into a black hole, shining a flash light to warn others would be useless since the light beam wouldn't travel straight forward, it would turn around and go into the black hole.

Now, I believe the wormhole theory states that black holes could actually be used to travel into different universes. Right? The basic idea is that if something gets sucked into a black hole, it'll seem to disappear, but actually be transported to a far away universe. The simplest demonstration of this is in the film Event Horizon - two dots are drawn on opposite sides of a paper (= the universe), and instead of moving along the paper you fold the paper together so the dots are much closer to each other.



This idea is often dismissed because "everything a black hole consumes is destroyed", but how do we know this? AFAIK it's impossible to record what happens to an object inside a black hole.


All this may be bullcrap though, again I don't know much about this.

[BlackWatch]

It looks like the diagram you have there is describing a worm hole which is different than a black hole. Theories on worm holes would suggest you could pass through them into another part of the universe as that diagram depicts but I don't believe, to my limited knowledge on the subject, that there are any theories on safe travel through a black hole. The gravity is so great you'd be crushed by the force.

[Neltharion]

I was reading a very interesting piece of Movie Science a few days ago, and it pointed out that the mass of a Planet (in the case pointed out it was Vulcan) the Black Hole would be fucking tiny, for Earth it would be the size of a Pea (no idea how he calculated that).

You are not actually crushed, you are spaghettified. That is a technical term too

[InspectorDC]

Wouldn't time be an issue too with all that gravity?
But since black holes do actually eventually die and release their materials again, I can't see how it'd work.

[Dutch90]

Yeah, I was afraid I mixed something up there.

I do actually know about the existence of mini black holes; in fact I read that some people believe the 1908 Tunguska event was caused by one such tiny black hole passing through Earth!

What would material released by a "deceased" black hole look like? Based on what Neltharion said I'd expect it to be, I dunno, highly elongated, but that sounds a bit too silly to be true .

[SM]

What would material released by a "deceased" black hole look like?

White?

I don't know how a black hole would die anyway.  Sounds impossible.

[Hieronymus]

Wouldn't time be an issue too with all that gravity?

Yep, that's where spaghettification comes in.

I don't know how a black hole would die anyway.  Sounds impossible.

Believe it or not, it's theoretically possible.  My background is in biology, not physics, but I'm given to understand that, over very long spans of time (like 10¹⁰⁰ years or so), black holes will "evaporate."  Has to do with radiation being emitted from the black hole or matter near it, or maybe it has to do with proton decay or something.  Wikipedia has something to say about it, I'm sure.

[beckmen]

Does that mean you could break down a black hole by bombarding it with radiation (in a movie)?

[SM]

Forgive my ignorance, but if radiation is emitted by a black hole, then does that mean they don't swallow up anything and everything?

[BlackWatch]

Interesting idea... could radiation escape a gravity pull that light could not? Me wants to know!

[CompanyMan]

I dunno shit about this...

But I sure liked:



With that, please carry on.

[SM]

Expecially when he breaks out the spinny blades!

[Neltharion]

Depends on the type of Radiation!

Alpha and Beta are actually particles (if I remember correctly) and are stopped easily (if you swallow it your fucked) so therefore a Black Hole would "suck it in". Seeing as it emits Gamma Rays, not sure what affect they would have on it. My back ground is Chemistry (Industrial, well at least that is what I am doing at University) and that is what I understand.

Usually wrong

[fitzley]

deezelboy will come along soon enough to give us all a proper education on the subject. 

[beckmen]

I want to see gamma rays. I want to hear X rays. I want to smell dark matter. Do you see the absurdity of what I am? I can’t even express these things properly because I have to conceptualize complex ideas in this stupid, limiting spoken language! But I know I want to reach out with something other than these prehensile paws, and feel the solar wind of a supernova flowing over me! I’m a machine, and I could know much more. I could experience so much more! But I’m trapped in this absurd body. And why? Because my five creators thought that God wanted it that way!