Hong Kong scientists are claiming an efficacy of 129lm/W from an led ‘filament’ light bulb, claiming it to be the most energy-efficient led filament technology. Researchers came from State Key ...

PORTLAND, Ore. — Using ultrafast lasers to inscribe nanoscale patterns on the filaments of standard incandescent lightbulbs, researchers at the University of Rochester (N.Y.) were able to increase the ...

Conventional incandescent light bulbs have been outlawed in many countries mainly due to their inefficiency but also because they tend to fail after a relatively short lifetime. Typically, more than ...

It’s been nearly two years since U.S. manufacturers stopped making conventional 40- and 60-watt incandescent lightbulbs. While you can still find a few on store shelves, the familiar incandescent ...