电磁波半波损失中蕴含的能量守恒定律

Law of Conservation of Energy Contained in the Half-wave Loss of Electromagnetic Wave

在研究波动光学界面反射波时,半波损失是一个重要的考虑因素。而多数大学物理教科书对半波损失产生的本质没有进行详细阐述,而其中蕴藏的能量守恒定律也不被人们所关注。从电磁场基本理论出发,分析了半波损失产生的原因及条件,用能流密度知识挖掘了半波损失所蕴藏的能量守恒定律,并从理论推导和实验现象两方面验证了能量守恒定律在电磁波中的适用性。

In the wave optics,the half-wave loss is an important factor of the interface reflection wave,But most of the university physics textbooks fail to explain the essence of the half-wave loss in detail. The law of conservation of energy contained in the half-wave loss is not to be noticed by most of people. Based on the basic theory of electromagnetic field,this paper analyzed the cause of half-wave loss,and exposed the law of conservation of energy contained in the half-wave loss from the theoretical derivation and experimental phenomena,the applicability of the law of conservation of energy in electromagnetic wave was illustrated.