Punch the magnet is called a magnet for again, it is material and own existence of magnetic field around the object, there are two categories, natural and man-made.
Artificial punch magnet is usually made of metal alloy, with strong magnetism.
Ferromagnetism, refers to a kind of material of magnetic state, has the spontaneous magnetization phenomenon.
Some of the material under the action of an external magnetic field, after magnetization, even if the external magnetic field disappeared, still can maintain its state of the magnetization and magnetic, which is spontaneous magnetization.
All of the permanent magnet have punch punch magnet or the punch magnet.
Powerful magnet transformation: no magnetization of random arrangement is a magnet for internal magnetic molecules, after magnetization process of magnetic molecules will have the arrangement of the rules.
At this point, the magnetic molecular N pole and S pole will be in the same direction to make a magnet with magnetic and magnet.
At the same time, the same magnet there instead of equal amount of magnetic poles and poles.
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