初中物理第一册“大气的压强”一节中,介绍并安排了“马德堡半球”实验,可否用其它的简单器具来模拟“马德堡半球”从而收到同样的演示效果?下面介绍两个简单的装置。一、受“拔火罐”的启发,将一截废旧自行车内胎剪成方块,用图钉或小钉子将其钉到板凳面上,在罐头瓶内放一块燃着的纸,快速扣在橡胶皮上,这样,抓住罐头瓶可以提起板凳,还可往板凳上加放砖块,板凳仍被提起来,如果作得好,罐头瓶可以提 In the first volume of “Volumes of the Atmosphere” in the first volume of Physics for Junior High School, we introduced and arranged the “Madeborg hemisphere” experiment. Can we simulate the “Madeborg hemisphere” with other simple instruments to receive the same demonstration effect? Two simple devices. 1. Inspired by the “cupping cupping”, a piece of worn-out bicycle tire was cut into squares and pinned to the bench surface with pushpins or small nails. A piece of burning paper was placed inside the canned bottle and quickly buckled on the rubber. In this way, grab the can to lift the bench, or add bricks to the bench. The bench is still lifted. If it is done well, the cans can be lifted.