The composition of the magnet is an atom such as iron, cobalt, or nickel. The internal structure of the atom is relatively special, and it has a magnetic moment. Magnets are capable of generating magnetic fields and are characterized by attracting ferromagnetic materials such as metals such as iron, nickel, and cobalt.
Types of magnets: Shape magnets: square magnets, tile magnets, shaped magnets, cylindrical magnets, ring magnets, wafer magnets, magnetic bar magnets, magnetic frame magnets.
Attribute magnets: samarium-cobalt magnets, neodymium-iron-boron magnets (strong magnets), ferrite magnets, aluminum-nickel-cobalt magnets, iron-chromium-cobalt magnets, industrial magnets: magnetic components, motor magnets, rubber magnets, plastic magnets, etc. The magnet is divided into permanent magnets and soft magnetic. The permanent magnet is magnetized so that the spin of the magnetic substance and the angular momentum of the electron are arranged in a fixed direction, and the soft magnetic is charged. (It is also a method of adding magnetic force.) When the current is removed, the soft iron will slowly lose its magnetic properties. The midpoint of the strip magnet is suspended by a thin wire. When it is stationary, its two ends point to the south and north of the earth. The end pointing to the north is called the north pole or the north pole, and the end pointing to the south is the guide pole or S. Pole.
If the Earth is imagined as a large magnet, the Earth's geomagnetic North Pole is the guide pole, and the geomagnetic South Pole is the North Pole. Between the magnet and the magnet, the magnetic pole of the same name is repelled, and the magnetic pole of the same name is attracted. Therefore, the compass is repelled from the South Pole, the North Arrow is repelled from the North Pole, and the compass is attracted to the North Pole. Classification: Magnets can be divided into "Eternal Magnets" and "Non-Eternal Magnets". The permanent magnet can be a natural product, also known as a natural magnet, or it can be made by hand. Non-permanent magnets, such as electromagnets, only exhibit magnetism under certain conditions.
