Each magnet has two poles, the location of the magnetic pole represents the strongest magnetic force. The two poles are called the Arctic (N) and the Antarctic (S), respectively. Under the influence of the earth, a freely rotatable magnet, one end of the magnetic pole will naturally point to the north, the other end of the magnetic pole pointing south. The name of the pole is the result. When a magnet is divided into two parts or more, each part becomes a new magnet - that is, has two poles.
The opposite magnetic poles attract, homosexual magnetic phase repulsion. When the N poles of the two magnets are put together, the two magnets are mutually exclusive - that is, they move in the opposite direction. The same is true of the S poles of different magnets. When the N pole of a magnet is close to the S pole of the other magnet, the two magnets will attract each other and move closer to each other.
In the case of farther apart, magnets do not necessarily produce repulsive or attractive magnetic forces, because magnetic forces have a certain distance limit. Magnetic force can occur within the scope of the action, known as the magnetic field. The stronger the magnetic force from the magnet, the weaker the magnetic force from the magnet. The magnetic field range is usually expressed by a series of lines, which are called magnetic lines of force, extending from the N pole of a magnet to the same magnet or the S pole of the other magnet.
The magnets can attract objects made of iron, steel, cobalt, or some other magnetic material. Under the action of a magnet, an object made of a magnetic material can itself become a magnet (this process is called magnetization). Magnets are able to attract these objects, because a magnet of a magnetic pole in the vicinity of the object will be the end of the object magnetized to its different magnetic pole, and then attract each other. For example, the N-pole of the magnet will magnetize the closest part of the object to the S-pole. At this point, the other end of the object becomes N-pole.