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Levitation. Maglev trains have no contacts with the rails while they move forward. They are levitated on the guide-way with the help of magnetic forces. Levitation is the process by which an object is suspended against gravity in a stable position without any physical contact.
Metal coils lining a guideway or track. Large guidance magnets attached to the underside of the train. The big difference between a maglev train and a conventional train is that maglev trains. do not have an engine -- at least not the kind of engine used to pull typical train cars along. steel tracks. The engine for maglev trains is rather inconspicuous.