How awesome are Black Holes??

[Raider]

I have a hard time seeing two black holes meeting "under" the fabric via warping of space time in 3d (+t=4d) versus 2d (+t=3d). Seems like this would either fold the universe or be different than i've seen it described (black holes falling down then pulled together "under" the fabric, thus a wormhole)

[fafalone]

Well if the curve approaches infinity it could certainly curve right around to another point.

[Radical Edward]

Originally posted by fafalone

If the universe is indeed shaped like a doughnut, could it emerge at another point? I don't think we know enough to say it ends at the singularity, because we lack the laws to explain the workings of physics on that scale.

 

I agree that we don't know enough to say it ends there, I am just trying to dispel the myth that it has to actually go somewhere - at least as far as we know.

[fafalone]

Why doesn't matter in a black hole collapse back into energy?

[Radical Edward]

who knows. physics appears somewhat undefinied at the singularity, apart from that it appears to be the end of space and time.

[Guest ChildOfTheMind]

yup

[JaKiri]

Originally posted by Radical Edward

who knows. physics appears somewhat undefinied at the singularity, apart from that it appears to be the end of space and time.

 

'Information sink'

[Radical Edward]

Originally posted by MrL_JaKiri

'Information sink'

 

the singularity is the end of information. I wish we could use it to dispose of some of the crap that people make up about this particular physical phenomenon.

[fafalone]

I believe black holes "evaporate" over time.. where does the mass go?

 

Cosmic strings?

[Ryoken]

Yes, dosn't the extra mass get spewed from the poles?

[fafalone]

How would matter ever get out of the black hole since the escape velocity is greater than c?

[Ryoken]

Sorry, i don't remember the specifics, but what i do remember is that it does not escape from the poles as matter.

 

And it is only visible when it is pointed towards your view point.

 

hopefully someone else can fill in this missing intormation :feedback:

[fafalone]

So not only is the matter moving superluminally but if its visible than the light it emits must also be moving much faster.

[Radical Edward]

the matter forming these jets never crosses the event horizon, and is actually ejected by magnetic fields forming at the poles of a spinning black hole. Hence it never has to travel superluminally. The jets are quite tightly focussed, and so as rightly said, you can only see them when they are pointed in your direction, like a lighthouse or pulsar.

 

the evaporation of a black hole is just particles, and hypothetically (I don't know if there is a proper model behind this) caused by particle antiparticle pairs forming near the event horizon, with one escaping and one falling in.

[KHinfcube22]

I think a black hole isn't neccesarily a hole at all. It is just a point in space that goes into the fourth dimesion, assuming time isn't, or excluding it as the fourth dimension. By the way, what would happen if one was to find out how to pull apart ones molecules and put them back together again with one being still alive. Then one shot ones chaotic form of molecules at a black hole?

[Radical Edward]

Originally posted by KHinfcube22

I think a black hole isn't neccesarily a hole at all. It is just a point in space that goes into the fourth dimesion, assuming time isn't, or excluding it as the fourth dimension. By the way, what would happen if one was to find out how to pull apart ones molecules and put them back together again with one being still alive. Then one shot ones chaotic form of molecules at a black hole?

 

try not to make things up without being able to substantiate it

 

if one could do that, then arguably one could construct a perfect copy of someone else, since particles such as electrons are nescessarily indistinguishable. (indistinguishable in the strict sense, that if I exchange one electron with another, then nothing at all has happened to the system containing the electron)