When picking an LED bulb, it's best to stick with well-known, reliable brands, even if you have to pay a bit more. For smart ...

Tucson’s skies are slightly darker thanks to the completed streetlight conversion project, according to a study by the Tucson-based International Dark-Sky Association. The study, however, was limited ...

Cornell researchers have built a programmable optical chip that can change the color of light by merging photons, without ...

Abstract: Although a single-stage off-line power light-emitting diode (LED) driver can achieve low cost and high efficiency, the notorious double-line-frequency flicker issue with a single-stage LED ...