Looking for an optical element that performs the same function as polarized film, except either direction of polarization is electrically controlled, or its polarization can be turned on and off (then I could just use two of them to get the same effect). I thought I heard of something like that - similar to an lcd in concept.
2007-08-21 21:45:50 · 2 answers · asked by - 3 in Science & Mathematics ➔ Physics
LCD is the one. Liquid Crystal Display. By putting electrical force i it, it polarizes the liquid leaving light through only in the same polarized direction.
Have you thought of using film and having it turned electronically? If two films are plirized in a 90 degree angle from each other, they do not let light through it either. Try with polaroid sunglasses, remove them from the frame, put them on top and turn them.
Good luck with it!
2007-08-29 07:36:57 · answer #1 · answered by Greek Oracle 4 · 0⤊ 0⤋
hmmm. I've seen one in a bathroom stall once. It was the door. very weird. I'm sure theres one out there. I'll check
no luck.
2007-08-22 04:54:22 · answer #2 · answered by Mercury 2010 7 · 0⤊ 1⤋