Lenz’s Law Demo

This video is designed to help my middle school students understand the relationship between magnets and electricity. It’s not pretty but it works… people say the same thing about me.
While the specifics of Lenz’s Law and Faraday's Law are a little out of my 7th grader’s reach, they will get the “big idea” and that’s all I want. I saw this used in a Physics Girl video that features the band ArcAttack.

Special thanks to Joe DiPrima from the high-tech music group ArcAttack for help and support. He graciously stepped me through how to construct the device. He even coined the name Lenz Tube.