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人民教育出版社出版的“全日制普通高级中学教科书”《物理》第二册(必修加选修)(2003年6月第1版)中有一个学生实验“验证动量守恒定律”。其装置(如图1所示)与原版教科书中的实验装置(如图2所示)有着细微差异。可见是编者经过修改以后得到的,那么这种修改是否科学、合理呢?下面我们就来分析一下:
The “Energy Conservation Law” is a student experiment in the “Full-time Ordinary High School Textbook” published by the People’s Education Publishing House and “Physics” Book 2 (Compulsory and Optional) (the first edition in June 2003). The device (as shown in Figure 1) is slightly different from the experimental device (as shown in Figure 2) in the original textbook. It can be seen that the editor has gotten after the amendment. So is this change scientific and reasonable? Let’s analyze it: