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Can a device be constructed of a super conducting disk connected to a electromagnet that generates a field such that the disc locks "in" the field generated by the electromagnet such that the device self levitates without the need for track or permanent magnets?

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No, the locking occurs relative to the field which is now moving with the device. It's like trying to push your dashboard to move your car.

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+1 for that board analogy. –  Colin K Dec 27 '11 at 1:08
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