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quote:Originally posted by lightarrowIt's called "hole" because everything goes near it is pulled in and, if you approaches it too much (event horizon), you are "sucks" in, like inside a sink's hole, without any possibility to escape. It's called "black" because not even light can escape from inside the event horizon of it.
quote:Originally posted by Atomic-S...the integral over the surface of the sphere, of the product of the eigencurvatures of each area element, times the size of the element, equals 2 pi steradians. But when a black hole is inside the sphere, that may not be true any more.