Anatomy of a Black Hole

[Gaina]

This is so geeky, I just love it!

Anatomy of a Black Hole.

[ron1863]

I enjoyed it too and it was educational

[Hedge Witch]

Interesting, Gaina. Still trying to work out how density can be infinite

[Gaina]

Originally Posted by Hedge Witch

Interesting, Gaina. Still trying to work out how density can be infinite

Look no further than any politician - they demonstrate 'infinite density' quite beautifully .

[Hedge Witch]

Originally Posted by Gaina

Look no further than any politician - they demonstrate 'infinite density' quite beautifully .

LOL So true!

[treecreeper]

I don't see how the third theory of what happens to the spaceship - i.e. it reappears at a remote galaxy - is compatible with Conservation of Mass. Even if the spaceship reappears in its new location immediately, to a stationary observer, the two events (disappearance into black hole and reemergence elsewhere) are not simultaneous to a moving observer according to Special Relativity, so Conservation of Mass has been compromised.

[nytecam]

It's a great animation but I don't have the knowledge to challenge it

I did wonder if the BIG Bang that created 'our' universe 13.7B years ago, reputedly from a singularity shown in the animation, may the exit point of matter from another universe that vanished into a rather [large] blackhole. Presumably a singularity is just that however much material it contains eg a whole universe.
I'm not aware of any size limit to a blackhole or maybe there is?

[monkeypoo]

Interesting and informative! Black Holes - they're gggggggreat!

[Doggle Avaddit]

Originally Posted by Hedge Witch

Interesting, Gaina. Still trying to work out how density can be infinite

Well I don't know much about Black Holes, but I do know that mathematics is quite fond of "Series' ", where infinity is never quite reached but mathematically kind of is.

e.g. if you measure 1 metre, then add 1/2 metre then add 1/3 metre then 1/4metre and continue for ever, your measured line will get increasingly close to infinity without actually ever getting there. This is called a Divergent Series.

However, if you measure 1 metre, add 1/2 metre, then add 1/4 metre then 1/8 metre and continue for ever, your measured line will get increasingly close to 2 metres, again without actually ever getting there. This is a Convergent Series.


So, perhaps the density of a black hole increases as you go further towards the singularity, for all intents and purposes reaching infinity, but not really.

Or perhaps I am talking a load of rubbish and a singularity really is infinite density. In theory of course.

[Hedge Witch]

Interesting. I was just assuming that the sun had mass, and some of that mass becomes a certain volume. And so it has a certain density. I'll try and think about it some more. Cheers

[Doggle Avaddit]

Originally Posted by Hedge Witch

Interesting. I was just assuming that the sun had mass, and some of that mass becomes a certain volume. And so it has a certain density. I'll try and think about it some more. Cheers

Hmm, the average scientific theory tends to hold up quite well for medium sized things, but when you start talking of very small things, very large things, very dense things, very large distances etc, current theorys fall over, and theorys like Quantum Mechanics makes more sense instead. (and some QM is REALLY REALLY weird)

Science really wants a General Theory of Everything, but at the moment that does not exist. Gravity is the big problem to solve. Nobody really knows what it is or how to encompass it in their theory.

[Hedge Witch]

Yeah, I like gravity, one of life's great mysteries; I had a feeling that it might be involved. I wonder what the universe would be like if it didn't exist. Since no-one knows what it is, who can tell.