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Magnetic levitation
Suspension of objects by magnetic force. / From Wikipedia, the free encyclopedia
Magnetic levitation (maglev) or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic force is used to counteract the effects of the gravitational force and any other forces.
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This article is about the physical phenomenon. For the form of transportation, see Maglev.
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The two primary issues involved in magnetic levitation are lifting forces: providing an upward force sufficient to counteract gravity, and stability: ensuring that the system does not spontaneously slide or flip into a configuration where the lift is neutralized.
Magnetic levitation is used for maglev trains, contactless melting, magnetic bearings, and for product display purposes.