%A LI Zhao-yu
%T Derivation of the conservation laws of electromagnetic field using the index notation
%0 Journal Article
%D 2023
%J College Physics
%R 10.16854/j.cnki.1000-0712.220460
%P 16-
%V 42
%N 9
%U {https://dxwl.bnu.edu.cn/CN/abstract/article_8740.shtml}
%8 2023-10-16
%X This paper uses the index notation to derive the laws of conservation of energy, momentum and angular momentum of the electromagnetic field, which is characterized by clear physical ideas and unequivocal direction of derivation; natural introduction and intelligible meaning of physical quantities; convenient mathematical operations and relatively low difficulty.