Thu 3 Apr 2008
Shake Flashlight - You Won’t Need to Buy Batteries Never Again
Posted by admin under Video Clips
This flashlight is based on Faradays Law of Inductance: a magnet passes back and forth between a wire coil giving charge to capacitor that powers the LED.
Nice thing to have in emergency situations.. It is even good for exercise 
Ranked 3.17 / 5 | 2691 views | 3 comments
Click here to watch the video
Submitted By: krmak
Tags: Shake ; Flashlight ; Torch ; Lamp ; LED ; Faraday ; Capacitor ; Coil ; Magnet ; Inductance ; Batteries ;How ; DIY ;
Categories: How To Science & Tech
