it's not polarized windows you're looking for; they're liquid crystal
windows. yes they make large ones, and yes, they are very expensive. call up
a custom window place and ask them.
cave creek, az
Everyone's correct. ;-) Liquid crystal displays/windows work by polarising
the light. When the LCD is activated, it shifts the polarity of the light by
90 degrees, which is either allowed through or blocked by a normal
polarizing filter. If you reverse the filter, the display shifts from being
the most common black-on-clear (e.g. a digital watch) to clear characters on
a black background. In the latter, you'd backlight the display.
The LCD windows are very cool, but from the outside they would look
completely black, as they would from the inside. I'm not sure it that's what
you really want. Thieves might think you are never in... ;-) Where they are
great is that it's not just on and off you get, it's a dimmer switch type
thing (IIRC), so you can dim or brighten the room easilly during the day.
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