大学物理 ›› 2025, Vol. 44 ›› Issue (11): 44-.doi: 10.16854/j.cnki.1000-0712.250167

• 教学讨论 • 上一篇    下一篇

对论文“自由空间中平面电磁波的电场和磁场总是同相位吗?”的再讨论 

宋立涛,何杰,王杰芳   

  1. 1. 郑州大学 物理学院,中原之光实验室,河南郑州450001;2. 河南工业大学 物理学院,河南郑州450001
  • 收稿日期:2025-03-27 修回日期:2025-04-11 出版日期:2026-01-19 发布日期:2026-01-20
  • 作者简介:宋立涛(1978—),男,河北保定人,郑州大学物理学院讲师,博士,主要从事电磁学和大学物理教学工作.
  • 基金资助:
    郑州大学数智化一流课程(2024ZZUYLKC017),郑州大学教改项目(2024ZZUJGXM053),河南工业大学智慧课程(2024zhkc-65)资助

Discussion on the paper titled “Are the electric and magnetic fields of plane electromagnetic waves in free space always in phase?”

SONG Litao1 , HE Jie2 , WANG Jiefang1   

  1. 1. School of Physics and Laboratory ofZhongyuan Light, Zhengzhou university, Zhengzhou 450001, China; 
    2. School of Physics, Henan University of Technology, Zhengzhou 450001, China
  • Received:2025-03-27 Revised:2025-04-11 Online:2026-01-19 Published:2026-01-20

摘要: 本文对《大学物理》论文“自由空间中平面电磁波的电场和磁场总是同相位吗?”中讨论的问题进行了重新讨论.结果表明关于平面电磁波的电场强度E、磁场强度H可能反相位的观点是没有必要的,“同步”和同相位亦无本质区别,传统教材中认为自由空间中平面电磁波的电场与磁场总是同相位的观点并无问题.

关键词: 电磁学, 平面电磁波, 同相位, 反相位

Abstract: This paper reexamines the issue discussed on the paper titled "Are the electric and magnetic fields of plane electromagnetic waves in free space always in phase?" in College Physics. The results demonstrate that the viewpoint suggesting possible phase opposition between the electric field intensity E and magnetic field intensity H in plane electromagnetic waves is unnecessary. There is no essential difference between the "synchronization" and the same phase, confirming that the traditional viewpoint presented in textbookswhich maintains that the electric and magnetic fields of plane electromagnetic waves in free space are always in phaseholds true without exception.

Key words: electromagnetism, plane electromagnetic waves, in phase, phase opposition