Maglev
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Maglev is a system of rail transport whose rolling stock is levitated by electromagnets rather than rolled on wheels, eliminating rolling resistance.
Transrapid 09 at the Emsland test facility in Lower Saxony, Germany
Example of low-speed urban maglev system, Linimo
The Birmingham International Maglev shuttle
Transrapid at the Emsland test facility
Magnetic levitation
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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.
Magnetic levitation can be stabilised using different techniques; here rotation (spin) is used
A superconductor levitating a permanent magnet
An example of magnetic pseudo-levitation with a mechanical guide (wooden rod) providing stability
The Transrapid system uses servomechanisms to pull the train up from underneath the track and maintains a constant gap while travelling at high speed