For white light, however, two or more wavelengths are required to generate a broad spectrum of light ... photonic crystals into the LED 15. White-light sources based on LEDs have a promising ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

generation stands out for its ability to produce light across a wide portion of the visible and infrared spectrum. However, traditional SC sources rely on weak third-order optical nonlinearity ...

[Oneironaut] sent us another IR hack. This time it is a writeup on the best ways to create IR light sources from regular lights. Since normal flashlight bulbs emit a broad enough spectrum to ...

This is a major worry with LED lamps that are increasingly being installed in cars, often replacing the old-style halogen bulbs that have a very different color spectrum and beam patterns ...

cold laser therapy and nonthermal LED light therapy. The umbrella term is called photobiomodulation therapy, which covers other colors, or wavelengths, that have health benefits. These light ...