Electromagnetic Flashlight Overview
Look inside the clear case as you shake, and see the powerful magnet pass back and forth through a loop of wire. Electrical energy is stored in a capacitor that can be charged hundreds of thousands of times. The "bulb" is an ultra-bright white LED. 30 seconds of shaking provides a full charge, and will produce a beam of light for several minutes. Use this to wrap up and review many concepts in your unit on electricity and magnetism!Recommend : Generator Buying Guide emergency diesel generator residential diesel generator generator diesel powered
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