On Wed, 06 Feb 2008 10:14:10 -0600, Reedick, Andrew wrote: >> > 'c' is also the speed of light. >> >> 'c' is the speed of light _in_a_vacuum_. > > True. > > >> > And since nothing can travel faster than light... >> >> Nothing can travel faster than the speed of light _in_a_vacuum_. There >> are situtaitons where things can (and regularly do) travel faster than >> light: http://en.wikipedia.org/wiki/Cherenkov_radiation > > > Nope. It propagates, not travels, faster than light. Go ask a > physicist to explain it. It's odd...
Propagate, travel, what's the difference? If you're referring to the fact that in non-vacuum, light travels more slowly due to frequent interactions with the particles of the medium it travels through, that's discussed in the Wikipedia article. There are quite a number of superluminal (faster than light) phenomena. See, for example: http://en.wikipedia.org/wiki/Slow_light http://en.wikipedia.org/wiki/Phase_velocity http://en.wikipedia.org/wiki/Faster-than-light particularly the section titled: "Superficially FTL phenomena which do not carry information" -- Steven -- http://mail.python.org/mailman/listinfo/python-list
