Molecular current hypothesis
Ampere's molecular current hypothesis has very important significance. On the one hand, it puts the magnetic interactions between magnets and magnets, currents and magnets, currents and currents, magnets and currents into the action of currents and currents, which establishes Ampere's law The theory of magnetic interaction linking electricity and magnetism; on the other hand, replacing the magnetic charge model with a molecular current model fundamentally reveals the internal relationship between the polarization and magnetization of matter, because the molecular current is nothing but a movement of charge.