>
> hello!
>
> Is it possible to define a plane
> which is transparent for light only in one direction and doesnt appear
> as object at all ( it mustn't be seen!) and it mustn't be reflective on
> both sides.
Just as a remark: there is no glass in reality that you can only
look through in one direction. It all depends on the lighting
on either side of the glass...
Markus
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