Polariser fun

I decided to do more PLAY with polariser film. Having watched the Royal Institutions Christmas Lecture on channel 5 over the holidays I found there was more to be done with polariser. Here's the site. I would recommend watching it if you are interesting in knowing more about how screens work, computers and the future for our interaction with both.
http://www.rigb.org/contentControl?action=displayContent&id=00000002537

The area I was interested in came up on show 2. Here they showed us how screens work and how they had developed new table top interactive screens.



Here are some more of my videos showing my experiments with polariser.

This next video shows another method of revealing an image from behind polarised film which has blackened out the image on the screen. I saw this experiment on the christmas lectures and thought I'd try it out. Basically the polarised film blocks the light from reaching our eyes and the screen appears black or off. In order to allow the light through again we can use the simple formula of water and sugar. . .