Permanent magnet manufacturer magnet Foshan, Zhongshan, Guangdong magnet magnet

When the Qin Dynasty false, the ancients had discovered and this knowledge accumulated magnetic, often encountered in the search for iron ore magnetite (Fe3O4 three). Such as "pipe" was first recorded in the "mountains there are a magnet, their under gold and copper." Again, "Shan Hai Jing" also has a similar record. "Lu" chapter nine volumes have proficient:. "Chi move iron, or lead it too and said:" The stone is a hard mother, but 石有慈 two and has not been kind, loving stone to attract his children, not Tsz stone can not attract. "Earth is a big magnet, when its two poles near the geographic South Pole and the geographic North Pole. Thus the magnet surface of the Earth can be freely rotated, respectively, will be due magnet sex repulsion, opposites attract nature indicates north and south. to the Western Han Dynasty, some people use this property magnets made two pieces like things, by adjusting the mutual position of the two pieces polar, sometimes two pieces attract each other, sometimes mutually exclusive. is called "fighting chess." He dedicated this novel stuff Han Dynasty, and the spot demonstrations. Emperor Wu marveled, Dragon Heart big Yue. magnet can attract iron, so if you can also attract other metallic objects it? proved a magnet not only can not attract gold, silver, copper and other metals, can not attract the bricks and the like items. Western Han Dynasty, people have found that magnet can attract iron, but not attract other items. When the two magnets together, the sometimes attract each other, and sometimes each other exclusion. Now people know that the magnet has two poles, one said N pole, a said S pole. like poles repel each other, opposite poles attract each other. At that time people did not know where and mystery, but this phenomenon has long been found.