Am 14.07.2010 01:50, schrieb David Miller:
> I'm trying to set up a model for a physics experiment I'm doing. The gist of it
> is there is a crystal suspended in a liquid over a light source with a camera
> above it. I'm trying to set up a povray model where the liquid and the crystal
> have different indexes of refraction. The problem is it seems that changing the
> index of refraction of the crystal has no effect on the model. IE, if the index
> of refraction of both the crystal and the liquid are one, the crystal is still
> visible. Any help doing this would be appreciated.

Why - yes, of course. The crystal has a surface transparency of 0.8, so 
no surprise it's still visible: It does absorb light. Or am I 
misunderstanding something here?

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