Re: A partial black hole?

Erik Max Francis wrote:
> sigidunum@[EMAIL PROTECTED]
 wrote:

>> What your subjective freefall time would be, once
>> inside, I have no idea.
> 
> Freefall time is ~10^-5 s per solar mass of the black
> hole.  So that's a few days here.  So it won't be
> survivable for long, regardless.

It says on the Wikipedia page that something falling
into an event horizon will appear to redden and slow,
never quite reaching the event horizon, because of
the gravitational red****ft becoming infinite at
the horizon.

http://en.wikipedia.org/wiki/Black_hole#Before_the_falling_object_crosses_the_event_horizon

So, (1) how long does it "really" take to fall
into the event horizon and then hit the singularity,
and (2) what is the correct way to ask question (1)?

I'll give (1) another try:

If I drop a particle into a black hole from somewhere in
the neighborhood but well outside the event horizon, then,
from the particle's perspective it will drop through
the event horizon and hit the singularity in a
finite period of time.

But, what if I send a clock signal after it on a laser
beam, a laser fla****ng once a microsecond? How many
clock pulses will pass the particle (1a) between
being dropped and passing the event horizon and
(1b) between passing the event horizon and hitting
the singularity?

I expect the frequency of the clock pulses to increase
as the particle drops (in the particle's frame) because
of gravitational blue ****ft. The frequency may even
approach infinity as the particle approaches the
singularity, but it does not necessarily mean that
the integral of the frequency at the particle over
the proper time of the particle will be infinite.

If the answer to either (1a) or (1b) is "infinitely
many clock pulses", then the particle never gets to
where it's going, from the perspective of the outside
world.

Jim Burns