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Subject: Re: Black holes and time
From: Brian
Date: August 23, 19101 at 16:47:52

In Reply to: Black holes and time posted by Greg on September 13, 19100 at 23:42:21:

: If time "stands still" on the event horizon or just over, is this from the observers view or the participants view? Given the participant is on or over the event horizon.

: If you cross an event horizon then the instant you did (assuming you could survive getting there) you would be instantly in suspended animation and perfectly preserved for infinitey since you could not think (no neurons firing or chemical reactions occuring etc etc)?

: So if time does stop. Am I right in assuming that the instant a black hole forms it cannot get bigger, at its centre, since as soon as particles pass the event horizon they will not move any closer?

: Or is it a case that as soon as the event horizon is passed the particles are instantly at the centre and distance an irrelevant concept here?

---

The event horizon is nothing special, really. The one side of the EH is the same as the other. It is merely that orbit cannot be maintained INSIDE the EH through any attainable velocity.

So, crossing the event horizon changes nothing about your descent. The crossing does mark the point of no return for you and your constituent particles, but your downward progess to the singularity will continue. It is upon reaching the singularity, however, that I believe time stops for the participant. Time forever slows to a tangent of zero perhaps as you descend.

 Name: E-Mail: (Optional) Subject: Message: : : If time "stands still" on the event horizon or just over, is this from the observers view or the participants view? Given the participant is on or over the event horizon. : : If you cross an event horizon then the instant you did (assuming you could survive getting there) you would be instantly in suspended animation and perfectly preserved for infinitey since you could not think (no neurons firing or chemical reactions occuring etc etc)? : : So if time does stop. Am I right in assuming that the instant a black hole forms it cannot get bigger, at its centre, since as soon as particles pass the event horizon they will not move any closer? : : Or is it a case that as soon as the event horizon is passed the particles are instantly at the centre and distance an irrelevant concept here? : --- : The event horizon is nothing special, really. The one side of the EH is the same as the other. It is merely that orbit cannot be maintained INSIDE the EH through any attainable velocity. : So, crossing the event horizon changes nothing about your descent. The crossing does mark the point of no return for you and your constituent particles, but your downward progess to the singularity will continue. It is upon reaching the singularity, however, that I believe time stops for the participant. Time forever slows to a tangent of zero perhaps as you descend.
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