At 07:17 PM 12/26/2012, David Roberson wrote:
Well, this was a type of trick question. I agree that from the
perspective of an observer far away out of the influence of the
imaginary black hole boundary the probe ship would never appear to
breech the boundary. We would see any light emitted from this ship
very red shifted as the ship proceeded forward from our
perspective. Eventually, as after an infinite amount of time the
ship would become invisible entirely since no energy is left within
photons that arrive at our location.
If you can explain that, great. (That "infinite amount of time,"
i.e., the slowdown, fries my brain at this point. Yes, at the limit,
no photons can reach us, but this doesn't match the description of
the event horizon.)
As the ship *approaches* the event horizon, it is still outside of
it. And the light still travels at the speed of light, it is merely redshifted.
Now, here is my thought experiment. Take another probe ship and let
it follow the first one toward the boundary. It is closer to the
first ship than us such that it perceives the boundary as nearer to
the black hole center than us. It therefore remains in contact with
the first probe and can receive transmissions from it after we can
no longer receive significant energy. We readily pick up signals
from the second ship since it is a safe distance from the boundary
that we perceive. We obtain status from the first probe via the second.
This is roughly the paradox that I came across, the "rat" I smell.
I wonder if this is a hypothetical technique that would allow
information to be obtained from objects such as our first probe ship
as they arbitrarily approach a black hole? Could a chain of relay
stations defeat the lost information problem? If this is possible
then a lot of interesting questions arise. Perhaps information is
not lost as it enters a black hole after all.
Or perhaps, far more likely, we are not understanding black holes.
I'm not seeing any clear explanations out there, with an easy search.
That's puzzing in itself.
I found plenty of articles that say "this is how it is" or "that is
how it is," but very little explanation that actually leads to
understanding. When that happens in schools, it's a sign that the
teacher doesn't really grasp the subject.... or, alternatively, is
knowledgeable, but clueless as to how to explain it.
I'm suspecting there is a problem with relativity here.
If a photon can travel from spaceship A to spaceship B and from B to
our outside observer, why can't the same photon just travel from A to
the outside observer. It makes no sense, David.
Okay, here is how it could make sense. The photon from A to B is
redshifted. If it continued to travel it would be redshifted out of
existence. However, B emits a photon that is back at a starting
frequency, so it can make it.
But this is all totally contrary to other explanations.
