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Re: Semi-on-topic: Light that travels faster than the speed of light?


From: "Jay R. Ashworth" <jra () baylink com>
Date: Fri, 26 Aug 2005 10:44:47 -0400


On Mon, Aug 22, 2005 at 01:31:36PM -0600, Steve Meuse wrote:
   On 8/21/05, Peter Dambier <[1]peter () peter-dambier de> wrote:
     I have had a look into one of my microwave books. I have seen in
     coax cables the speed of lite drop to 90% or 80% depending on the
     insulator, the dielectric.

   I believe this is referred to as "velocity factor".

Not the speed of light; the speed at which the electromagnetic
wavefront travels through *that* conductor.  Yep; this is velocity
factor.  It can go down surprisingly far.

Cheers,
-- jra
-- 
Jay R. Ashworth                                                jra () baylink com
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