A New Expression Model of Classical Electromagnetic Theory at the Micro Level

Abstract Because Maxwell's classical electromagnetic theory is a macro-electromagnetic theory based on the cognition of the 19th century and before the 19th century, and because the physics of the 20th century has gained new cognition in the microscopic field, considering that it is now the 21st century. Therefore, this article attempts to establish a set of micro-expression theory of Maxwell's macro-electromagnetism theory based on the new cognitions obtained at the micro-level since the 20th century, in order to promote the further development of Maxwell's classical electromagnetism theory in accordance with the cognition of the times.