Quote:
Originally Posted by sabianq
this is why i think matter is indeed changed to energy as it crosses the event horizon of a black hole
It should be noted, that in order for an object to actually
reach the speed of light, it must have no mass, since E=mass*speed of
light^2
[...] is this a region where the gravitational attraction is equal to the speed of light?
meaning that as something falls into an event horizon of a black hole, it must be accelerated to the speed of light otherwise it would not be a black hole.
as stated above, if an object is approaching a relativistic velocity (meaning reaching the speed of light), then by if you follow special relativity dogma, that object must be turned into energy as it approaches and becomes equal to the speed of light.
Please, anybody tell me where I am lost in this reasoning.
|
The event horizon is not a region where the gravitational attraction equals the speed of light. If you think about it, that wouldn't even make sense: the gravitational pull is a force -- how could it equal a speed? The event horizon is also not a region where all infalling objects reach the speed of light; quite the contrary.
The EH is simply the distance of no return: if you got that close to a black hole, you would need to travel at least at the speed of light to
escape from it -- which you can't do. So, if you step into the EH, you will inevitably fall towards the centre of the BH. It makes no difference how fast you were going when you arrived there.