Re: Faster than Light?



Peri of Pera wrote:
I know of no regulatory force or power consisten
with logic that can or will set a maximum limit, especially since the
ether has been abolished.

<< In practice, the particle has to be traveling pretty close
to the velocity of light in vacuum (i.e., it has to be relativistic),
but modern particle accelerators produce copious amounts
of such particles. Now, we can get an electromagnetic
shock wave. We expect an intense cone of emission,

just like the bow wave produced by a fast ship. In fact,
this type of radiation has been observed. It is called
Cherenkov radiation, and it is very useful in high
energy physics. >>
http://farside.ph.utexas.edu/teaching/em/lectures/node50.html

See also:
http://en.wikipedia.org/wiki/Free_space

Sue...


Peter Riedt
.

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