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1 问题的提出油膜法测分子大小是早期测定分子大小的一种方法 .全日制普通高中教科书 (必修加选修或必修课本 )都列为学生实验 .利用宏观量的测量求出微观量的大小 ,这在我国高中物理学生实验中还是第一次 .但大多数学生的实验结果只能得出油酸分子直径的数量级是1 0 - 9m ,
1 The proposed method of measuring the size of molecules by the oil film method is a method for early determination of molecular size. Full-time regular high school textbooks (required plus optional or compulsory textbooks) are listed as student experiments. The amount of microscopic quantities is determined using macroscopic measurements. This is the first time in our country’s high school physics student experiment. However, the majority of students’ experimental results can only draw the magnitude of the molecular diameter of oleic acid is 10 to 9m.