|Project by fissionchips||posted 09-03-2011 09:21 PM||2403 views||5 times favorited||4 comments|
It turns out that it’s impossible to levitate a magnet free-air, thanks to Earnshaw's Theorem. This project gets around that problem with a few guiderails. I used some old bulky speaker magnets to make this, one in the base and two in the capsule (with polarities reversed to repel). When pushed up or down and released, the weight bounces up and down.
It would be fun to machine a version with smooth sliding bearings, as friction is the only dissipating force for the harmonic motion of the weight.