In article <3ebbd2fb@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

> > Mirages. The varying density can cause reflections.
> 
>   You don't mean variable refraction?

I do, and don't. The varying density causes varying optical density, 
which produces variable refraction. If things are set up properly, you 
can end up with reflections from a layer of hot air which look a lot 
like water.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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