Magnet

trap magnets can generate a magnetic field of an object, as a magnetic dipole, to attract ferromagnetic material such as iron, nickel, cobalt and other metals. Poles are judged by a thread hanging magnet, pointing to the north magnetic pole is called North Pole or N-pole finger, pointing to the south pole as a guide pole or S pole. (If you want to become a big magnet Earth is currently Earth's magnetic north pole is N pole, the geomagnetic South Pole is the S pole.) magnet tubes is different poles attract, with the exclusion pole. And refers to the Arctic polar attraction guide, guide pole and guide poles repel, repel finger Arctic and Arctic finger.