Is the definition of Balck holes really a lumped mass with higher density than normal mass structures?

Answer 1

The mass would be compressed till it is completely solid with the electrons and protons etc squashed in to a solid mass with no space .

Answer 2

A black hole is an object with a gravitational field so powerful that a region of space becomes cut off from the rest of the universe – no matter or radiation (including light) that has entered the region can ever escape. As not even light can escape, black holes appear black (resulting in the name for these objects).

While the idea of an object with gravity strong enough to prevent light from escaping was proposed in the 18th century, black holes as presently understood are described by Einstein's theory of general relativity, developed in 1916. This theory predicts that when a large enough amount of mass is present within a sufficiently small region of space, all paths through space are warped inwards towards the center of the volume. When an object is compressed enough for this to occur, collapse is unavoidable (it would take infinite strength to resist collapsing into a black hole). When an object passes within the event horizon at the boundary of the black hole, it is lost forever (it would take an infinite amount of effort for an object to climb out from inside the hole). Although the object would be reduced to a singularity, the information it carries is not lost (see the black hole information paradox).

While general relativity describes a black hole as a region of empty space with a pointlike singularity at the center and an event horizon at the outer edge, the description changes when the effects of quantum mechanics are taken into account. The final, correct description of black holes is unknown (it requires a theory of quantum gravity).

Answer 3

Not exactly... the internal structure of a black hole is radically different from anything else in this universe. According to current theory, all of the mass in a black hole is collected in a singularity -- a single point in space, with infinite density, not just "higher" than normal matter.

The fact that our current laws of physics lead to this "infinite" quantity tells us that our laws of physics are incomplete.

Answer 4

A black hole by definition is a region or object in space in which the gravitational pull is so great that even light cannot escape possible caused by the collapse of a star.

Answer 5

Sort of. Basically it is any mass concentration that is so dense that escape velocity is greater than the speed of light.

Answer 6

I guess that could be a definition a really vauge one anyway,
There are many definitions because blackholes are complicated things.

Answer 7

http://en.wikipedia.org/wiki/Black_Hole