Japanese LED traffic lights just too cool when snow falls
Energy-saving LED traffic lights seemed like a cool way to cut back on electricity costs, but Japanese police said Monday they might just be too cool—because they don't melt snow.
Crystal light: New light-converting materials point to cheaper, more efficient solar power
University of Toronto engineers study first single crystal perovskites for new applicationsEngineers have shone new light on an emerging family of solar-absorbing materials that could clear the way for cheaper ...
A bright future for LEDs
A single wafer-level LED chip that produces more than 150 Watts of light output has been made in work form China. This level of output from a single chip makes applications for LEDs in high power lighting ...
Giving LEDs a cozy, warm glow
When the 2014 Nobel Prize in physics was awarded this October to three Japanese-born scientists for the invention of blue light emitting diodes (LEDs), the prize committee declared LED lamps would light the ...
A brighter design emerges for low-cost, 'greener' LED light bulbs
The phase-out of traditional incandescent bulbs in the U.S. and elsewhere, as well as a growing interest in energy efficiency, has given LED lighting a sales boost. However, that trend could be short-lived as key materials ...
Researchers develop tool to predict the level of driver discomfort caused by LED lighting
(Phys.org) —Long hours of nighttime driving can cause eyestrain because while our vision adapts to the surrounding darkness, the sudden stabs of brightness from streetlamps can be irritating, distracting ...
Security experts reveal weakness in WiFi connected LIFX light bulbs
LEDs: Better red makes brighter white
Chemists at Ludwig-Maximilians-Universitaet (LMU) in Munich have developed a novel type of red phosphor material, which significantly enhances the performance of white-emitting LEDs.
Philips eases switching fluorescent tubes with LED replacements
Researchers describe how to cause older Apple computers to video record without turning on LED light
Philips LED bulb with rad design set for January arrival
Breakthrough research produces brighter, more efficiently produced lighting
By determining simple guidelines, researchers at UC Santa Barbara's Solid State Lighting & Energy Center (SSLEC) have made it possible to optimize phosphors –– a key component in white LED lighting –– ...
Shanghai prof claims Li-Fi advance, prepares show kits
Optical wireless may be the answer to dropped calls, and more
Anyone who has tried to make a cell phone call from a crowded football stadium has had a taste of what engineers call spectrum crunch.