There must be some unwritten law that requires flashlight batteries to either be low on power or nearly dead just when blackouts hit. Or, for that matter, any other ...

Finally, an invention where you just shake something in order for it to work. This product is called the Forever Flashlight. When you shake it for 30 seconds, it's supposed to generate a strong ...

LED flashlights are coming on the market in a flurry lately, but here’s one with a difference: If you want to see it do its thing, pull its string. It has a pull cord like a Chatty Cathy, but instead ...

As Y2K approached and the world waited for blackouts that never came, human-powered electric gadgets saw a surge of popularity. These radios, flashlights and other devices don't need batteries -- they ...

I was looking at one of these:<BR>http://www.thinkgeek.com/gadgets/lights/5a9f/<BR><BR>As a gift or the larger hand crank one.<BR>http://www.thinkgeek.com/gadgets ...

Hold the flashlight horizontally and shake it so the magnet moves through the coil. Shine the light at the audience. Original construction: purchased. The flashlight has had its capacitor and on/off ...

As Y2K approached and the world waited for blackouts that never came, human-powered electric gadgets saw a surge of popularity. These radios, flashlights and other devices don’t need batteries – they ...

The principle is well understood: use a motor in reverse and you get a generator. Using this bit of knowledge back in 2001 is what kick-started [Ted Yapo]’s Hackaday Prize entry. At the time, [Ted] ...

Tiny, Ballard-based Shakelight.com is maneuvering through an obstacle course of knockoff competitors and patent issues as it works to increase sales of the Nightstar flashlight, which company ...