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如果留意观察,可以发现,在一些物理教学用书、教学参考书、学生辅导用书上有一些不确切的地方,本文摘取几例加以讨论,旨在引起同行的注意。1 液体蒸发有致冷作用? 人民教育出版社物理室编的初中物理课本第二册第78页,有这样一段话:“液体蒸发时温度降低,说明它要从周围的物体吸收热量,因此液体蒸发有致冷作用。”
If you pay attention to observation, you may find that there are some inaccuracies in some physics teaching books, teaching reference books, and student guidance books. This article takes a few cases to discuss and aims to arouse the attention of peers. 1 The evaporation of liquids has a cooling effect? The 78th page of the second volume of the junior high school physics textbook edited by the People’s Education Press Physics Room contains the following passage: “When the liquid evaporates, the temperature decreases, indicating that it absorbs heat from the surrounding objects, so the liquid evaporates. There is a cooling effect."