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 ...

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 ...

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 ...