Something AgentSmith mentioned in an earlier post: "Sure, the air between two non-transparent objects can have refractive properties. (but I'm not sure if you would see any difference in Byce if you did this) (scene enveloping cube with refraction?)", stirred the experimenter in me, so I built the following set-up (seen here in top and side view wireframe. The sphere was just to see if refraction would have an effect on objects in the cube. NOTE: Please refrain from commenting until I get the whole deal uploaded. I'm on a slow connection and would like to have this flow as there are 4 or 5 pics. Thanks.

This is not my "second childhood". I'm not finished with the first one yet.

Time flies like an arrow; fruit flies like a banana.

"I'd like to die peacefully in my sleep like my grandfather....not screaming in terror like the passengers on his bus." - Jack Handy