a fast screw

Posted by llechner on Oct. 31, 2007

This is how to make a screw spin while hanging upside down. All you need is a battery, a copper wire, a magnet(we used one from the end of a pointer), and a screw. The concept here is that we are creating an electric field that is perpendicular to th

Categories How To

Tags screw, electric, battery, magnetic

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