Lance Birch wrote:
> 
> David Fontaine wrote:
> > Heat also refracts light, like the puddle-on-the-road mirage. So light
> would
> > bend away from the center of the flame, no?
> 
> Well, it's not really the heat that does it, just the density change caused
> by the heat, but yes you're right, it will.  Because the air in the flame is
> hotter, it will be less dense, so a ray of light going in to it should bend
> away from the normal (if you were to draw the normal right through that is).

Which will also vary depending on where you intersect the flame since
there are varying temperatures within the flame itself.

-- 
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
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