双向标量——兼评电磁学关于含有双向标量问题的分析

ON TWO-WAY SCALAR—AND REVIEWING ANALYSES CONTAINING TWO-WAY SCALAR PROBLEMS IN ELECTROMAGNETICS

本文介绍双向标量及其参考方向的概念,阐述了参考方向在分析含有双向标量问题时所起的作用,接着指出,引入这两个概念有三个好处:第一,物理量的分类更加合理,标量和双向标量这两个物理概念更加清晰,参考方向和实际方向这两个术语更加明确;第二,双向标量关系式的意义更加完整;第三,分析含有双向标量问题的方法更加规范,而且增强了分析过程的科学性和分析结果的普遍性.最后,对用“传统”方法分析含有双向标量问题时出现的缺点作了评述.

The article introduces the concepts of two-way scalar and reference direction, and describes the role of reference direction in analyzing, problems containing two-way scalar. There are three advantages in introducing these two concepts. 1 . It is more rational for classifying physical quantities and the characteristics of physical quantities will be more outstanding; 2 . It is more complete and definite for describing the expression which contains two-way scalar; 3 . The method used to analyze problems containing two-way scalar will become more standard, the course used to analyze such problems will be more scientific, and the universality of conclusion will be greatly improved. The article also reviews the shortcomings in the traditional analysis of two-way scalar problems.