RE: Black Hole/Parallel Universe Theory
October 21, 2015 at 10:03 pm
(This post was last modified: October 21, 2015 at 10:12 pm by Anomalocaris.)
(October 21, 2015 at 9:54 pm)SnakeOilWarrior Wrote: I probably misunderstand more about black holes than not, but wouldn't the object in question be crushed by the gravity before it even reaches the event horizon?
Not crushed. There is nothing to push against you to crush you. Event horizon is not a solid surface.
Paradoxically, as you fall towards a black hole, Gravity would tend to tear you apart rather than crush you.
The force of gravity of black hole acting on the infalling object is proportional to the square of distance to the center of the black hole. Near the black hole, the force of gravity is extremely strong, true, but more importantly, the force of gravity increases very quickly as the distance to the black hole shortens. It can increase so quickly that the small distance between the part of infalling object further away from the blackhole and the part of the object closest to the black hole could be sufficient for the difference in the strength of gravitational pulls of the black hole to overwhelm the structural strength of the object. So in the case, gravity will tear the object apart. The larger the infalling object, the more easily it would be torn apart by gravity.
For example, for a really large object, say the moon, it is so easy for gravity to tear it apart the gravity of the earth could do it, you won't need a black hole. If you put the moon in a orbit that would bring it very close to the earth, to say within 1 earth radii. The gravity of the earth would tear the moon apart before the moon reach the closest approach.
But the differential force tearing apart an object of given size declines with the size of the event horizon. For extremely large black holes with a large radius of event horizon, the force tearing part an object would be very small. So you are better off falling into a really big black hole than a small one. You might be shredded into atoms before reaching event horizon if you were to fall towards a stellar sized black hole. But you would hardly notice any stretch if you were to fall towards a black hole the size of the core of milk way.
