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 ...

When Rachel Díaz of Culver City, California, “magically” refilled a soda can for her son, the nine-year-old’s first words were “Cool!” And then: “How’d you do that?” Science-based magic tricks stand ...

Windows and mirrors embedded with liquid crystals can hide images that appear only when the right kind of light is shined on them. The technique, inspired by a 4000-year-old trick for building “magic ...