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There are diamagnetic non-superconductors like pyrolytic graphite that can also evade Earnshaw's theorem, but this would be the first metal with this strength of diamagnetism at room temperature AFAIK.


Pyrolitic graphite can evade Earnshaw's theorem only with either specific magnet array shapes or with rotation, they still can't stably levitate on a regular dipole without rotation.


It can be done at all with a static arrangement of magnetic fields, though? Ooh.


Isn’t that those floaty spinning desk toys are?


You mean the ones with a DeLorean or whatever? Those are powered closed-loop-control devices. Or the spinning tops (Levitron etc.?) Those are dynamic and fall down when they stop spinning.


Those usually use active electromagnets, which also bypass the preconditions of Earnshaw’s theorem.




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