经典电动力学中的因果关系
Causality in classical electrodynamics
摘要：
电动力学中的因果关系是一个有些混乱的主题，特别是关于法拉第定律和安培-麦克斯韦定律的应用。这导致了一种建议，即我们不应该教学生电场和磁场可以相互引起，而是把重点放在电荷和电流作为因果代理。在本文中，我认为，场作为临时代理人具有平等的地位，我们应该教授这一点。在经典物理学中的因果关系的讨论之后，我将使用麦克斯韦方程的数值解来告知电动力学中基于场的因果解释。
英文摘要：
Causality in electrodynamics is a subject of some confusion, especially regarding the application of Faraday's law and the Ampere-Maxwell law. This has led to the suggestion that we should not teach students that electric and magnetic fields can cause each other, but rather focus on charges and currents as the causal agents. In this paper I argue that fields have equal status as casual agents, and that we should teach this. Following a discussion of causality in classical physics I will use a numerical solution of Maxwell's equations to inform a field based causal explanation in electrodynamics.
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