A curio, something unexpected, but likely has a very normal cause.
While looking around for some decent thing of plastic to make a larger rotor, for the EZ Spin project, I found a metal jar lid. The new 'dancing toys' magnets are ceramic, so I also wanted to see if they would work. They clipped themselves to the sides of the lid, so that bits good. A compass showed North for the magnets, South for the gaps between, also good. A pin was driven through the lid with a hammer and I was setting it all up to be semi-levitated, with some magnets held in the hand. That didn't work well, so a tiny neo went on top of the pin. Tried again with the hand held magnets, steady above. And then.....the rotor set off anti-clockwise, seemingly on its own !
Nothing is running on the bench, magnetic or otherwise. The speed of rotation has been the same the 3 times tried.
I stopped watching the rotation the first time and brought the top magnets nearer to the rotor again. It started up anti-clockwise again. Tried again, same thing. So I grabbed the camera.
[youtube]ggcCdoO-vPk[/youtube]
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ʎɐqǝ from pɹɐoqʎǝʞ a ʎnq ɹǝʌǝu
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