clipka wrote:
> That's a misconception here: Time for photons has not come to a standstill in
> their *own* frame of reference,

How do you know? They're moving at c, where relativity divides by zero. :-)

>> IIRC, I read where the circumference of the (ideal) earth is something like
>> a cm shorter than what it should be given the radius, and the sun is a
>> kilometer or ten kilometers or some such different.
> 
> The order of magnitude is right, but someone messed up the sign; see
> http://www.johnstonsarchive.net/relativity/stcurve.pdf (emphasis added):
> 
> "The true diameters of the Sun and Earth are 4.1 km and 4.4 mm GREATER,
> respectively, than one would expect from applying Euclidean geometry (C = pi d)
> to the observed surface of these bodies"

Diameters are greater than they should be, circumference is shorter than it 
should be. Yes?

>>> Given that spacetime is notoriously distorted at the EH, this makes *no*
>>> statement whatsoever about its radial distance from the singularity. It could
>>> be - ta-ding! - zero after all...
>> More like infinity, methinks.
> 
> (*scratches head*)
> Doesn't make sense to me: We get closer to the black hole's center, and when we
> have reached the EH this distance becomes *infinite*?

Yes. for the same reason that the diameter of the earth is *greater* than it 
should be given its circumference.

-- 
   Darren New, San Diego CA, USA (PST)
   "Ouch ouch ouch!"
   "What's wrong? Noodles too hot?"
   "No, I have Chopstick Tunnel Syndrome."

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