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© Filip NOVKOSKI / Eric FALCON / MSC / CNRS Images



Magnetic snake charmer

There is no magic involved in the strange oscillations seen in this chain of metal balls. The movement is actually induced by a magnetic field produced by an electromagnet that completely encircles the pit where the chain of balls has been placed. By varying the intensity of the magnetic force applied, the researchers can counteract the effect of gravity. As a result, the metal ‘snake’ begins to undulate while moving slowly along, giving the impression that it is dancing to the rhythm of the magnetic field.

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