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等效思想是物理学中的基本思想之一。其实质是在效果相同的情况下,将较为复杂的实际问题变换为简单的熟悉问题,以便突出主要因素,抓住它的本质,找出其中规律。因此,应用等效法时往往是用较简单的因素代替较复杂的因素,以使问题得到简化而便于求解。等效或等价是指不同的物理现象、模型、过程等在物理意义、作用效果或物理规律方面是相同的,它们之间可以相互替代,而保证结论不变。等效的方法
Equivalent thinking is one of the basic ideas in physics. The essence is that under the same effect, the more complex practical problems can be transformed into simple familiar problems in order to highlight the main factors, grasp its essence and find out the laws therein. Therefore, the application of equivalent method is often replaced by more simple factors more complex elements, so that the problem is simplified and easy to solve. Equivalence or equivalence means that different physical phenomena, models, processes, etc. are the same in terms of physical meaning, action effect or physical law, and they can substitute each other to ensure the same conclusion. Equivalent method