4 ms·
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 di
by sudosysgen 3y ago
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.
- taneq 3y agoIt can be done at all with a static arrangement of magnetic fields, though? Ooh.
- TylerE 3y agoIsn’t that those floaty spinning desk toys are?
- johncolanduoni 3y agoThose usually use active electromagnets, which also bypass the preconditions of Earnshaw’s theorem.
- taneq 3y agoYou 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.