I got some of these magnets that are 7/16″ x 1/32″ thick. They are little disks. I want to make a pretend perpetual motion machine out of them. Someone is telling me that if I arrange them into a wheel with the same pole facing out and also have a stationary ring facing in with the same poles inward, it will spin perpetually. So I’ll make this just to show that it doesn’t work. Well they said they’d make it but we all know how much work perpetual-talkers get done. 🙂
I’m sure they have lots of uses in the lab too!