How is magnetism produced by a magnet?
Because the magnet magnetic generation principle is explained: the general object have a small current loop lot (such as electronic circular motion to form a current loop), and the current loop will produce magnetic effects accordingly, because the magnetic field generated by the inner current loop is out of order in the direction of the general object, the magnetic field strength all directions cancel each other, so the macro objects showed no magnetic;
It can be thought of as the object, the magnet is a tiny part of the internal circuit for some reason (such as iron long nonmagnetic in constant magnetic field) have been arranged, the intensity of the magnetic field in one direction than other directions, so exhibit magnetic.
First of all, a magnet is a ferromagnetic substance, not necessarily iron. If you want it to be magnetic, you must magnetize it and let the magnetism disappear.DefinitionMagnetization is the process of ordering magnetic material which is not magnetic.principleMagnetic materials are divided into many tiny regions, each of which is called a magnetic domain, each of which has its own magnetic distance (i.e., a tiny magnetic field). Generally, the magnetic distances of each domain are different, and the magnetic fields cancel each other, so the whole material is not magnetic. When the direction of each domain is uniform, the whole material shows magnetism.The so-called magnetization is to make the magnetic domain of the magnetic domain in the magnetic material become consistent. When the material that does not exhibit magnetism is placed into another strong magnetic field, it is magnetized, but not all materials can be magnetized, and only a few metals and metal compounds can be magnetized.
