- #1
g.lemaitre
- 267
- 2
This is from Hawking's Brief History of Time:
I don't see why the black hole is cut off from the rest of the universe. The black hole is still there and it's still made of ordinary matter, just a more dense than other matter. Is it because time stops in a black hole? Or that nothing can escape from it? Even if those two traits are true I don't see why those conditions qualify as cutting one's self off from the rest of the universe.
it seems that gravity may provide a limit to this sequence of “boxes within boxes.” If one had a particle with an energy above what is called the Planck energy 10 to the 19 electron volts, its mass would be so concentrated that it would cut itself off from the rest of the universe and form a little black hole.
I don't see why the black hole is cut off from the rest of the universe. The black hole is still there and it's still made of ordinary matter, just a more dense than other matter. Is it because time stops in a black hole? Or that nothing can escape from it? Even if those two traits are true I don't see why those conditions qualify as cutting one's self off from the rest of the universe.