Andre? At the beginning of ampere 182 1, ampere put forward a famous hypothesis: all molecules in an object have cyclotron current, and this cyclotron current forms macroscopic magnetism. This hypothesis was proved 70 years later, from which we can know Ampere's outstanding ideas in current magnetism and so on. We usually say "current", which was put forward by Ampere. Before Oster and Ampere, electricity mainly stayed in the static range. Ampere first put forward "electrodynamics", which showed that this subject was to study the motion of electric charges. Coulomb's law is the basic law in electrostatics, and Ampere's law is the basic law in electrodynamics.