"Invisible" <voi### [at] devnull> wrote in message
news:47342cbb$1@news.povray.org...
> For light, the velocity varies a little, but it's roughly 300,000 km/s.

Ur, no. The speed of light in a vacuum doesn't vary at all. It's a universal
constant.

299 792 458 m.s^-1

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