Introduction To Magnet
Magnet can generate a magnetic field of an object, as a magnetic dipole, can attract ferromagnetic materials such as iron, nickel, cobalt and other metals. The judgment is based on thread hanging a magnet pole, points to the North Pole is called the Arctic or n pole, pointing to the South or s is the South Pole-pole. (If you think of Earth as a magnet, the Earth's geomagnetic North Pole is the pole n, magnetic South is s. ) Magnet heteropolar attracts, with the exclusion. Arctic and Antarctic attraction, pointed to Antarctica and Antarctic repel each other, pointed to North Pole and Arctic repel each other.