Recently I spent an afternoon changing all the light bulbs in my home to fluorescent devices. It's not mandatory in the U.S., but it saves energy. In places where it is mandatory, like England, ...
Researchers have solved a major problem for optical wireless communications - the process by which light carries information between cell phones and other devices. Light-emitting diodes (LEDs) pulse ...
[Sam Miller], [Sahil Gupta], and [Mashrur Mohiuddin] worked together on a very fast LED matrix display for their final project in ECE 5760 at Cornell University. Real time! They started, as any good ...
CFL and LED bulbs are light years ahead of incandescents in the energy efficiency arena. But attractiveness? In most cases, incandescents still win. LEDs are more pleasant than CFLs, but as Yumi Kori, ...
The numbers you see on the box don't always work out in real life. LED bulbs do last longer, but those claims about five to 10 years are estimates based on internal testing -- and companies are always ...
If you want to take a picture of something fast, and we mean really fast, you need to have a suitably rapid flash to illuminate it. A standard camera flash might be good enough to help capture kids ...
Modern LED lights come with big promises: they'll save energy, include smart features and last for years without burning out. But in reality, that last part doesn't always hold up. After testing and ...
Researchers have solved a major problem for optical wireless communications - the process by which light carries information between cell phones and other devices. Light-emitting diodes (LEDs) pulse ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback