对于大气压强存在的定性实验,初二学生最感兴趣的,应首推葛利克的马德堡半球实验最为精彩。但一般学校目前尚不具备马德堡半球,因而在讲授初二物理第五章气体的压强第一课的时候,学生望“图”不止“渴”;教师亦感到遗憾,这是因为马德堡半球的实验 For qualitative experiments with atmospheric pressure, students of the second grade are most interested, and it should be the most exciting of Golick’s heidelberg experiment. However, the general school does not currently have the hemisphere of Madebo, so when teaching the first class of the first half of the physics pressure in the fifth chapter of gas, the students are looking for more than “thirsty”; the teachers also feel sorry for this. Because of the experiment in the Heidelberg hemisphere