Discover how to build a simple DIY Stirling engine powered by heat from candles using an empty spray can and pen components.
Explore how a basic LED can be used as a tiny solar cell, generating measurable voltage under sunlight. This hands-on ...
Tech Xplore on MSN
Future LED light could both illuminate and communicate
In the visions of researchers at the University of Oulu, light does far more than illuminate. It provides, among others, a ...
Should you spend some time around the less scientifically informed parts of the internet, it’s easy to find “Free power” stories. Usually they’re some form of perpetual ...
After reviewing bulbs from GE Lighting, Philips Hue, Cree, Lifx and more -- and checking the results from our excellent CNET labs -- I’m ready to share my top picks for floodlight bulbs that can do it ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback