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Levitron
Now that you have acquired your LEVITRON® and have (presumably) mastered the art of spinning the top and placing it in its position of stable levitation, you are perhaps beginning to feel the full sense of wonderment.
LEVITRON® excites in many people. We receive numerous queries from floating toy lovers asking for an explanation of how it levitates . Many express puzzlement that it works at all, often citing a theorem due to Earnshaw (1,2) as proof that it should not work. Interest in this magnetic item has always run high among scientists.