“马德堡半球”实验是证明大气压存在的一个著名实验,一般学校的教师对这个实验,只能讲讲而不能做,其原因在于:两个半球合上后,由于不能密封,结合处漏气, The “Madeborg hemisphere” experiment is a well-known experiment to prove the existence of atmospheric pressure. Teachers in general schools can only talk about this experiment and cannot do it. The reason is that after the two hemispheres are closed, they cannot be sealed and the joint leaks. gas,