I have a book that talks about diffraction gratings.  Says a typical one
has 14,000 to 15,000 rulings per inch and that for maximum efficiency
the seperation of them should be on the order of 1/50,000 inch, or about
the wavelength of light.

I would think aliasing would be a problem. ;)

-Mike

Carl Bartels wrote:
> 
> Does anybody have any thoughts about making a patch to add true
> diffraction
> to povray.  For example, the idea of double slit interfearence pattern
> or the
> diffraction of a pinhole (good-grief, Bessel functions!)  Or would
> mathematical
> optics (vs. geometrical optics) not be raytracing anymore?
> 
> I've never done much with pov except apply patches and trace scenes so
> if anyone
> has some idea, please let me know.
> --
> Carl Bartels, Department of Chemsitry, Mcgill University, to reply to
> me,
> just kill a and 5 from the email name, Montreal, QC, cAnAdA

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