allowing light to shine through and making the glass transparent. In the off state, the electric charge is removed and the liquid crystals scatter and block light, making the glass opaque.
When glass frogs emerge during the rainy season, researchers at the Smithsonian Tropical Research Institute follow their migration out of the forest and along streams. These transparent leaf-lying ...
Glass, a ubiquitous material, is surprisingly made from ordinary sand. Intense heat, comparable to a space shuttle's re-entry, transforms sand's quartz crystals into an amorphous solid—a state ...