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中学物理中几乎所有的重要概念及规律都是建立在一些理想模型上的。离开了诸如质点、点电荷、理想气体等,那些从客观现象中经过高度科学概括、从中抽出其物理本质的理想模型。物理——这门高高耸立于当代那些灿若繁星的各门类科学中的那座最为壮丽的金色宫殿,就会从根基处发生坍塌。而物理学中一切理想模型的建立(从最基本的物理概念到解答一道物理习题),都必须严格地遵循一条最重要的法则,那就是等效替代的法则,关于这个问题限于篇幅我就不一一赘述了.本文的目的是只想就等效替代法在高中物理解题中应用的广泛性和培养学生严密的物理思维方面作一点力所能及的分析,谨愿它能达到以石击水的功效。
Almost all the important concepts and laws in middle school physics are based on some ideal models. Leaving away such as particles, point charges, ideal gases, etc., those ideal models that have been highly scientifically summarized from the objective phenomena and extracted their physical essence. Physics - The most magnificent golden palace that stands tall in the contemporary science of all kinds of stars will collapse from its foundation. And the establishment of all ideal models in physics (from the most basic physical concept to the answer to a physics problem) must strictly follow one of the most important rules, that is, the law of equivalent substitution. I will not limit the length of this issue. One by one, the purpose of this article is to analyze only the equivalence of the equivalent substitution method in the high school material understanding problem and to cultivate students’ rigorous physical thinking. We hope that it can achieve the effect of striking the water with stone. .