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

[Peter Dambier <peter () peter-dambier de>]

Steve Brown wrote:
> Perhaps they are referring to being able to vary the speed while it is 
> below the speed of light. That is, slowing it down to 1/10th the speed 
> of light, and then speeding it up to 1/5th the speed of light.
>
> Steve Brown

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. In waveguides, you might say in a coax cable without the
wire in the midle and without the insulator the speed goes up.

Seeing antennas made of coax always smaller than actual wavelenght and
antennas made of waveguides always bigger than wavelenght suggests
inside that waveguide the speed must be higher than the speed of light.

Those people experimented with tunnels first. You might say waveguides.
But now they are playing around with fibre. That allows us to verify
wether you really can send information faster than lite in it. I hope
we can make the cable long enough. Hopefully across the atlantic. :)

Regards,
Peter and Karin

> ----- Original Message ----- From: "Fergie (Paul Ferguson)" 
> <fergdawg () netzero net>
> To: <nanog () merit edu>
> Sent: Saturday, August 20, 2005 10:40 AM
> Subject: Semi-on-topic: Light that travels faster than the speed of light?
>
>
> > Man, I knew I should've gotten in on the ground floor in
> > any effort to speed up light -- someone's going to be
> > rich beyond their wildest dreams. :-)
> >
> > (Thanks to a post over at Slashdot) the Science Blog
> > reports that:
> >
> > [snip]
> >
> > A team of researchers from the Ecole Polytechnique Fédérale de 
> > Lausanne (EPFL) has successfully demonstrated, for the first time, 
> > that it is possible to control the speed of light - both slowing it 
> > down and speeding it up - in an optical fiber, using off-the-shelf 
> > instrumentation in normal environmental conditions. Their results, to 
> > be published in the August 22 issue of Applied Physics Letters, could 
> > have implications that range from optical computing to the fiber-optic 
> > telecommunications industry.
> >
> > [snip]
> >
> > http://www.scienceblog.com/light.html
> >
> > - ferg
> >
> > --
> > "Fergie", a.k.a. Paul Ferguson
> > Engineering Architecture for the Internet
> > fergdawg () netzero net or fergdawg () sbcglobal net
> > ferg's tech blog: http://fergdawg.blogspot.com/


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