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Re: Singularity Temperature



Hi Glenn--
Describe the measurement that the captive inside the horizon would
make, remembering that space and time are being interchanged. It seems
to me that the local metric (alright, the curvature) is involved in every
measurement.
Regards,
Jack

On Fri, 2 Mar 2001, Glenn A. Carlson wrote:

The singularity is just where general relativity breaks down. Mr. Uretsky
is right that a complete description of the singularity awaits a theory of
quantum gravity.

But I assert that the temperature of matter inside the black hole (though
not at the singularity) is just as real and no different that the
temperature of matter outside the black hole. The temperature of matter
inside a black hole is only unobservable from outside the black hole. If
you are inside a black hole, you can measure the temperature of infalling
matter in just the same way as if you were outside the black hole. You
just wouldn't be able to communicate your measurement to anyone outside the
black hole.

Glenn A. Carlson, P.E.
Xannah ASE
St. Peters, MO
gcarlson@xannah.com

At 08:58 PM 3/1/01 -0700, you wrote:
Date: Thu, 1 Mar 2001 17:34:19 -0600
From: Jack Uretsky <jlu@HEP.ANL.GOV>
Subject: Re: Singularity Temperature
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

Hi all-
On Thu, 1 Mar 2001, Tim O'Donnell wrote:

Is there a temperature at the singularity?
I would think as things enter a black hole they would
generate heat as they are being "rearranged" and
compressed. Would the be a temperature once it reached
the singularity? Can up as a discussion in the classroom.

The meaning of <at the singularity> is still not understood.
It awaits, in approximately the language of Misner, Thorne and Wheeler,
the consummation of the wedding between quantum mechanics and general
relativity.
In any event, matters inside the black hole's event horizon are
not observable, so I'm not sure that your question has meaning. If I
were to answer your question "yes" there is no possible experiment that
could falsify my answer.
Regards,
Jack


--
While [Jane] Austen's majestic use of language is surely diminished in its
translation to English, it is hoped that the following translation conveys
at least a sense of her exquisite command of her native tongue.
Greg Nagan from "Sense and Sensibility" in
<The 5-MINUTE ILIAD and Other Classics>