Warp wrote:
> 
>   c is the speed of light in vacuum. Period. It's constant. There are no
> different c's for different media.

Well, this is only a matter of notation. I have had teachers
that used c0 for "your" c, and "c" for Jamie's c. I've also
had other teachers that used "c" for "your" c and "c'" for
Jamie's.

-- 
Adrien Beau   adr### [at] freefr   http://adrien.beau.free.fr/

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