This is what happens when take pics of clear plastic objects in front of a pc screen with a polarising filter on the camera.

The pc screen is emitting polarised light (white screen) and the camera has a filter so the light gets cross polarised. The screen turns black and lots of coloured patterns appear in the plastic as the light refracts through it.
No postwork other than cropping and putting together for in here.

I don't know what possible use any of this is - but there you are. I had been trying to work out a way of taking pics of refracted light since last months challenge - suppose I'm a bit late now :D

Message edited on: 06/22/2005 07:57

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html