The light-emitting diode (LED) keeps making inroads into everyday electronics. From displays to bulbs to headlamps and other lamps in newer vehicles, this device is producing brighter, more attractive ...

LEDs are tiny components found in phones, TVs, lights, and displays—but how do they actually glow? This video explains how electricity moves through a semiconductor to produce visible light. Learn how ...

British inventors began experimenting with electric lighting in the 1830s, working on so-called arc lamps, while other scientists around the world focused on developing a functioning incandescent lamp ...