自制物理实验教具拾萃自制大气压强演示仪韦家帅大气压强存在演示实验，按照传统的方法拿来一个盛满水的杯子，用一块厚纸片把杯盖严，然后用手按住纸片把杯子倒过来，再把手松开，而厚纸并不掉下来从而证实了大气压的存在。但是，在做这个实验的时候，常有学生提出异议，... Homemade Physics Experiment Teaching Tools Picking up Made Atmospheric Pressure Demonstrator Weijia Shuai Atmospheric pressure exists demonstration experiment, according to the traditional method of bringing a cup filled with water, with a thick piece of paper to the lid tightly, and then hold the paper by hand The cup was turned upside down, and then the hand was released while the thick paper did not fall off, confirming the existence of atmospheric pressure. However, when doing this experiment, students often objected, ...