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0 pointstaneq2y ago0 comments

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

0 comments

Isn’t that those floaty spinning desk toys are?

taneqOP2y ago

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.

johncolanduoni2y ago

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

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TylerE2y ago

Isn’t that those floaty spinning desk toys are?

taneqOP2y ago

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.

johncolanduoni2y ago

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

j / k navigate · click thread line to collapse