Description of the experiment Tesla's 'Egg Of Columbus'
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I've attached a photograph of the famed "Egg of Columbus" -- a rotating field experiment that was on exhibit at the World's Fair in 1893.
The Egg was created by Nikola Telsa and consisted of a complex polyphase field-coil located directly under a plate with a copper-plated egg positioned on top of it. When power was applied in sequence ( 3 6 9 )to the coils, the complex magnetic field arrangement not only inductively created a high-spin on the egg, it also made it stand up on end -- appearing to resist gravity.