Light can be produced and/or controlled electronically in a number of ways. Among the widely used of all the different types of semiconductor diodes are the Light Emitting Diodes or LEDs. It is a PN ...

But if that isn't enough to placate an ardent green activist there is, thankfully, environmentally-friendly light at the end of the tunnel. Steps to make our Christmas' greener are already being made.

To be more energy efficient, many people have replaced their incandescent lights with light-emitting diode (LED) bulbs. However, those currently on the market emit a lot of blue light, which has been ...

Light emitting diode demonstration box, 1996. Paper label on front: "InGaN SQW LED / UCSB MOCVD Lab" [Indium Gallium Nitride [SQW] Light Emitting Diode / University of California Santa Barbara Metal ...

At-home LED devices, particularly those that combine red and blue light, are efficacious for acne and can likely complement other over-the-counter and prescription treatments. HealthDay News — At-home ...

Perovskite LEDs with the world's highest efficiency (EQE = 23.4%) -- Seoul National University and University of Pennsylvania Research team at Seoul National University (Prof. Tae-Woo Lee) and ...

The tl;dr is that if all you care about is picture quality, OLED is the way to go. If you want something extremely large (100-plus inches), extremely bright (too much ambient light in your room), or ...

Light-emitting diode (LED) light therapy is a cosmetic and medical treatment that uses LED wavelengths to treat various skin conditions, such as acne and psoriasis. You can get this therapy at a ...