Light-emitting diodes (LEDs) are so ubiquitous that it's easy to forget just how much society relies on these underappreciated technological wonders. Yet, the history of the LED goes back further than ...

First used as status and indicator lamps, and more recently in under-shelf illumination, accent lighting, and directional marking applications, high-brightness LEDs have emerged within the last six ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Three scientists have jointly earned the Nobel Prize in physics for ...

It’s hard to believe that the first blue LED didn’t arrive until 1993. They look simple, but looks are deceiving (Fig. 1). 1. Image showing a blue InGaN-based LED with gold wire contacts (0.4 × 0.4 mm ...

A new LED works directly from 120 Vac and is designed to replace ordinary 120MB-style incandescent indicator bulbs. A new LED works directly from 120 Vac and is designed to replace ordinary ...

You might have come across articles saying that the LED light bulb emits blue light which causes a myriad of harmful effects including damage to the retina, macular degeneration and disturbed sleep ...

LEDs inherently produce monochromatic light. An excited electron decays back to the ground state, releasing its energy in the form of a photon. The wavelength of this photon is defined by the band ...

A new LED works directly from 120 Vac and is designed to replace ordinary 120MB-style incandescent indicator bulbs. Designated the 120MBLS-X-CX, the wide-angle LED draws less than 8 mA. Additionally, ...