[12405] in North American Network Operators' Group
Re: ATM (was Re: too many routes)
daemon@ATHENA.MIT.EDU (Tim Pozar)
Mon Sep 15 10:39:40 1997
From: Tim Pozar <pozar@kumr.lns.com>
To: srh@merit.edu (Susan R. Harris)
Date: Mon, 15 Sep 1997 07:31:06 -0700 (PDT)
Cc: gih@telstra.net, nanog@merit.edu
In-Reply-To: <Pine.SUN.3.95.970915084334.14846C-100000@home.merit.edu> from "Susan R. Harris" at Sep 15, 97 08:46:24 am
Susan R. Harris wrote:
> > Photons propagate at 0.65c in fibre - the exact speed does vary
> > depending on whether its single or multimode fibre.
>
> Hi Geoff - not to reveal my ignorance or anything, but ... is that 65
> degrees celcius?
>
> > The equivalent EMR propagation speed in coppr is 0.75c
>
> What is EMR?
Electro-Magnetic Radiation.
The velocity will vary +/- ~10% depending on the type of material for the
dielectric and dimension of the transmission line.
Tim
--
Snail: Tim Pozar / LNS / 1978 45th Ave / San Francisco CA 94116 / USA
POTS: +1 415 665 3790 Radio: KC6GNJ / KAE6247
"It's a damn poor mind that can only think of one way to spell a word."
- Andrew Jackson
"What is wanted is not the will to believe, but the will to find out,
which is the exact opposite." -- Bertrand Russell
