But Maglev-magneettrein in Shanghai.
Maglev is the abbreviation of Magnetic Levitation. In this concept, a metal object is floated (levitation) by creating an alternating magnetic field under the object. As a result, magnetic induction currents occur in the metal object which generate an opposite magnetic field. The two magnetic fields punch each other, causing the object to float. This float is basically not stable, so measures must be taken (for example by controlling the alternating magnetic field) to obtain a stable state. An example of an application of this principle is the magnetic field. The first regular commercial magnetic railway crosses the 30 km between Shanghai city and Shanghai airport in less than 7 minutes.
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