The NightStar “Shake” flashlight batteries are charged when you shake the light back and forth. This flashlight is waterproof and the manufacturer claims it can be stored for years with the ...

Some devices are elaborately made to appear as if they operate on Faraday’s Law, when in fact the components have as much functionality as a pet rock All the rage a few years back, shake-to-charge ...

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 ...