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本刊2002年第5期中刊登了《气体体积增大,一定对外做功吗?》一文,文中通过对一个具体实例的分析讨论,得出“气体的体积增大,不一定对外做功”的结论,尽管对于该题这样的结论很合理,但如果将这种结论推广到教学中,只能让学生在具体的问题面前无所适从。本文针对这一情况,对“气体体积增大,一定对外做功吗?”做进一步的讨论,给学生提供讨论问题的一个依据,以弥补该文的不足。
In this issue of the 5th issue of the magazine, “The volume of gas increases, must we do work externally?” is published. Through the analysis and discussion of a specific example, we conclude that “the volume of gas increases, not necessarily doing work externally”. Although the conclusion on this topic is very reasonable, if this conclusion is extended to teaching, students can only be puzzled in the face of specific problems. This article aims at this situation and makes further discussion on “Does the volume of gas increase, does it have to do work externally?” to provide students with a basis for discussion of issues to make up for the deficiencies in the article.