We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Nancy Redd Shifts in the number of daylight hours — due to changing seasons or ...

Nanotechnology on Surfaces and Plasma Laboratory, Institute of Materials Science of Seville, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, Seville 41092, Spain Department of ...

Abstract: This brief presents a new LED control scheme to maintain a constant LED power. In LED control schemes, the conventional approach is to maintain a constant LED current. However, this ...

Dermatologists explain the science behind wildly popular treatments like red light therapy, which is now available at home—for a steep price. Full-face LED masks like this one can cost up to several ...

Abstract: In this paper, we study an indoor visible light communication (VLC) downlink system with multiple LED fixtures and multiple single-photodiode users. We assume that VLC transmission over a ...