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Re:Why did we wait so long for the bicycle? by pushpop on Tuesday July 16, 2019 @02:28AM (#20447922)
I’m both impressed and have learned something new. Thank you :)
Re:Why did we wait so long for the bicycle? by WalterBright on Tuesday July 16, 2019 @05:22AM (#20448606)
I found a variant that uses magnets:

https://www.bu.edu/gk12/tommy/Electric_motors.pdf

The version I built was far simpler, and used electromagnets instead of the magnets, but you can see the general idea.

I didn't design it, I don't know where the Den Mothers got the design from. But I found it fascinating, as you could see and feel how it worked.

I built several of them. One day, I got a little bolder and replaced the battery with an A/C cord. The motor buzzed loudly and burst into flames. I learned about alternating current that day :-)