> My data are stored in a mesh.
> According to what you said if I change the ior from 1.5 into 4.8 
> (refractive
> index of iron), things should go well?
> It is pretty hard from the tutorial(s) to isolates the parameters 
> permetting
> to simulate behaviour according to the law of geometrical optics...
> pierre
>

POV doesn't simulate real life physics.
In general, POV handles reflection in the finish statement,
something like...

texture { pigment{rgb <0.5,0.5,0.5>}
   finish{ reflection {
         1,1
         metallic
         fresnel on }
   }
}

The normals of a mesh can make an object look very faceted,
you can get around this by using smooth_triangles in your mesh.

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