Faster than the speed of light...
William Couture email (remove spam text)
On 3/14/07, Hector Martin <marcansoft.com> wrote: hector
> John Ferrell wrote:
> > The following link addresses an instance of radiation traveling faster than the speed of light.
> > "Cerenkov Radiation comes from particles traveling at a speed greater than the speed of light in the medium in which they are moving."
> > smthop.com/articles1details.asp?NewsNum=805
> > There are other instances that I have run across that do not accept the speed of light as a limit.
> The limit is the speed of light in a vacuum, which is a constant, c. The
> speed of light in any other medium can be exceeded (as it is variable),
> it is the speed of light in a vacuum that can't. Exceeding the speed of
> light in a medium will cause nifty effects like Cerenkov Radiation, but
> it's certainly possible and commonplace around certain radioactive
Yes, it is. That's what causes the lovely blue glow around a nuclear
reactor sitting in it's water bath. The particle radiation is exceeding the
speed of light in the local medium (water), though not the speed of
light in a vacuum.
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