For the first time, researchers have used liquid crystals to create a flat magic window—a transparent device that produces a hidden image when light shines on it. The technology represents a new twist ...
The ability to make both transparent and mirrored surfaces switch between their natural optical behavior and the display of some other form of image has been a fixture in fiction and a challenge in ...
Researchers have used liquid crystals to create a flat magic window -- a transparent device that produces a hidden image when light shines on it. The process for creating transparent liquid crystal ...
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