What Is A Light-Emitting Diode? A light-emitting diode (LED) is a semiconductor device that emits light when an electric current flows through it. LEDs function by converting electrical current into ...

LED headlights have largely taken over the market from HID and halogen lights, and they definitely have advantages. Yet HID lights have their strengths, too.

What if you could point something at your skin — in the comfort of your own home, no less — and decrease skin problems like wrinkles and acne? That’s the promise of light wands. Light therapy wands ...

These light-emitting devices are all over the internet. We asked experts if they can reduce wrinkles, clear acne and more. By Melinda Wenner Moyer You’ve probably noticed this scene on social media: ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. With an eerie, robot-like appearance and an otherworldly glow when ...

An upconversion organic light-emitting diode (OLED) based on a typical blue-fluorescence emitter achieves emission at an ultralow turn-on voltage of 1.47 V. The technology circumvents the traditional ...

The generation of excess electron spin in semiconductors can provide extra information for logic operations, and is essential to many spin-based technologies. But it’s difficult to inject spin from ...

This article is a part of CNN Underscored’s Guide to Age-Defying Beauty, a weeklong focus on the essential products, tips and tricks to enhance your glow at any age. We’ll be featuring editor-tested ...

Lumen is a measurement of light output emitted from a source, whereas lux is a measurement of illuminance, or the quantity of ...