Drawer magnets into a permanent magnet and non permanent magnet. Permanent magnet natural also knownas lodestone, permanent magnet can also by the artificial strongest magnet is a neodymium magnet. The non permanent magnet with magnetic only under certain conditions, is usually produced bythe electromagnet forms, namely the use of current tostrengthen its magnetic field.magnetic sheet separator: magnet magnetic molecular unmagnetized is irregular, after magnetization process magneticmolecules regular arrangement.
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