Researchers create flat magic window with liquid crystals - Phys.org

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 on a very old light trick.

For the first time, researchers have used liquid crystals to create a flat magic windowa transparent device that produces a hidden image when light shines on it. The technology represents a new twist… [+5050 chars]

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