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Maglev Trains And The Technology Behind Them (magnetism)


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Maglev Trains And The Technology Behind Them (magnetism)

... Maglev Trains And The Technology Behind Them Introduction Magnets Magnetism is a phenomenon that occurs when a moving charge exerts a force on other moving charges. The magnetic force caused by these moving charges sets up a field which in turn exerts a force on other moving charges. This magnetic field is found to be perpendicular to the velocity of the current. The force of the field decays with distance from the charge. Most magnets we come across are weak permanent magnets, such as fridge magnets and door catches. A permanent magnet is a material that is naturally magnetic, they set up magnetic fields by electrons circling an atom setting up magnetic fields. They are based on oxides of barium and iron. They have low field strength and would not be strong enough for use in Maglev trains. Lately, developments in magnet research have found rare earth-permanent magnets that have a much stronger

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