nanog mailing list archives

Re: ATM (was Re: too many routes)


From: Tim Pozar <pozar () kumr lns com>
Date: Mon, 15 Sep 1997 07:31:06 -0700 (PDT)

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
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