Electrochromatic Glass: Instant Darkening
Velux has developed electrochromatic glass that darkens instantly whenyou flip a switch. Available now with additional sizes to be offeredlater this year, the glass works by applying an electric current to itsspecial layers, which then turn dark, blocking out sunlight and itsassociated heat. Perfect for skylights, with this technology you can doaway with shades and blinds, letting you electronically control whenit's dark in your room and when it's not.
Source: sage-ec.comAdded: 31 July 2006