Scattering/emitting media, glass sphere with IOR of 1.15 & dispersion
of 1.5, spotlight right next to the sphere, and upwards of 33 million
photons.

-- 
--Tim Cook
http://empyrean.scifi-fantasy.com

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GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
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PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
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