论文标题
麦克斯韦方程中的因果关系及其在入门物理学课程中电磁教学中的含义
Cause-effect relationships in Maxwell's equations and their implications in the teaching of electromagnetism in introductory physics courses
论文作者
论文摘要
对麦克斯韦方程的无意识处理可以导致解释其不同术语之间因果关系的存在,因此,随时间变化的电场会产生磁性磁场,反之亦然。在本文中,我们解决了与这些解释相关的问题及其对大学物理学课程中物理学教学的影响。首先,我们开发了支持电荷和磁场的发电机的电荷和当前密度(恒定或可变)的主要论点。然后,我们在入门课程级别上提出了许多课堂示例,使我们能够讨论将电场和磁场视为脱节实体导致矛盾的原因。最后,我们分析了他们在入门物理教学中的影响。
A thoughtless treatment of Maxwell's equations can lead to the interpretation of the existence of a causal relationship between their different terms and, therefore, that an electric field that varies in time generates a magnetic one and vice versa. In this article we address the problems associated with these interpretations and their consequences for the teaching of physics in introductory university physics courses. First, we develop the main arguments that support that charge and current densities, constant or variable in time, are the generators of electric and magnetic fields. Then, we propose a number of classroom examples at the level of introductory courses that allow us to discuss the reasons why considering the electric and magnetic fields as disjoint entities leads to contradictions. Finally, we analyze their implications in introductory physics teaching.