LEDs are tiny components found in phones, TVs, lights, and displays—but how do they actually glow? This video explains how ...

They’re in your phone, TV, car headlights, remote controls—even traffic lights. LEDs (Light Emitting Diodes) are everywhere.

Light-emitting diodes are front and center for many of our digital experiences. Every modern phone and tablet you look at uses LEDs in its display. It’s worth knowing how these work. In short, LEDs ...

Light emitting diode printers are usually classed with laser printers because they use a similar method of creating pages. Like a laser printer, they use a drum, toner and a fuser, and provide crisp ...

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 ...

Recently I spent an afternoon changing all the light bulbs in my home to fluorescent devices. It's not mandatory in the U.S., but it saves energy. In places where it is mandatory, like England, ...

Remember incandescent lights? They’ve largely been phased out because of their horrendously low efficiency—less than 5 percent. Incandescent bulbs are classified by how much electrical power they use, ...