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学校安排学生做“验证玻—马定律”的分组实验时,一般采用J2261型气体定律实验器(带刻度的注射器)。多年来,学生做这个实验的效果一直不理想,既使学生认真细致地操作,往往还是达不到预期的实验结果。那么,问题出在哪里呢?除了漏气和活塞与管壁摩擦这两个原因外,这个实验还有两个问题值得研究。第一,注射器外商标出的体积刻度值并不是注射器容积的真实值。现将仪器说明书给出的容积值
When the school arranges students to do group experiments of “Verification of Glass-Ma’s Law”, the J2261-type gas law tester (a syringe with scale) is generally used. For many years, the students have been unsatisfactory in doing this experiment. Even if the students are careful and meticulous in their operations, they often fail to achieve the desired experimental results. So, where is the problem? In addition to the two causes of air leakage and friction between the piston and the pipe wall, there are two issues worth studying in this experiment. First, the value of the volume scale marked out of the syringe is not the true value of the syringe volume. The volume value given by the instrument manual is now