Thread: Black Hole Question

There's decay from evaporation, but I'd be more interested in a decay that occurs when a black hole gets to be so big. Like, does stellar nucleosynthesis just keep on going until there is a large percentage of plutonium or whatever-ium and then there is a big bang? So instead of one big bang and crunch of the universe, there is little spread out crunches and bangs going on with the formation and decay of black holes..

I suspect also, that matter is formed inside of black holes or wherever there is lot of light intersecting, as those light waves get tied into square knots. Square as in E = mc'2. Is it possible for electromagnetic waves or fields to spiral into orbit around another and make a standing wave pattern ?

Originally Posted by Pyraxus

Having no extensive skills in mathematics

Don't feel bad, Pyraxus, as many degreed mathematicians can't balance a checkbook...lol...

Originally Posted by John Partika

Heh. Glad to have made you happy.

Yeah, it's some interesting stuff. If you want a crash course, watch the show "The Universe" and look for the episode "Cosmic Apocalypse" (I think that's the title), and it goes over how black holes die and explode. It's catastrophic and amazing. This is why science is awesome: because reality is amazing.

I have a question of my own, though. Does anyone know whether or not a black hole would still be spinning? Since it is infinitely dense and effectively renders most frames of reference invalid, would it still obey the conservation of angular momentum? Anyone know about this one?

Black holes violate a lot of common sense, but they do conserve angular momentum. They spin. In spinning, they pull nearby space around with them (frame dragging). This is the property that creates accretion disks and polar regions which radiate beams from very close to the event horizon.

Originally Posted by Emerson Mitchell

Black holes violate a lot of common sense, but they do conserve angular momentum. They spin. In spinning, they pull nearby space around with them (frame dragging). This is the property that creates accretion disks ...

Just to be clear, accretion discs are not unique to black holes. The planets in own Solar System including Earth were formed by the clumping of the material in the Sun's accretion disc.

Originally Posted by MisterMe

Just to be clear, accretion discs are not unique to black holes. The planets in own Solar System including Earth were formed by the clumping of the material in the Sun's accretion disc.

True, and in fact, most galaxies sport them, as do quasars. However, there are three means by which accretion discs are shaped: collisions, magnetorotational instability, and gravitational interaction. In a black hole, it's mostly due to the latter. For out solar system, it's a mix of the three.