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人教版高中《物理》第二册(必修加选修)第110面对“气体压强微观意义的模拟”演示实验这样表述:用小滚珠做空气分子模型,把装有滚珠的杯子拿到秤盘上方5 cm 处,把1粒滚珠倒在秤盘上,秤的指针会摆动一下.再在相同的高处把100粒珠子或者更多的滚珠持续快速地倒在秤盘上(原图12-35),如图1所示.秤的指针会在某一位置附近摆动.这说明大量滚珠撞击秤盘,对秤盘产生了持续、均匀的压力,在一定时间内,碰撞的滚珠越多,对秤盘产生的压力就越大.一、现行教材的实验及其存在的问题对于上述内容,笔者通过认真阅读和实验发现,有一些问
People’s Education Edition High School “Physics” Volume II (compulsory plus elective) 110 Face “Gas Pressure Microscopic Significance of the simulation ” Demonstration experiment Such statements: do with small ball air molecular model, the ball with a cup to get Pour 5 balls at the top of the pan and drop 1 pellet onto the pan, and the scale’s pointer will swing. Then, at the same height, keep 100 beads or more of the balls on the pan continuously 12-35), as shown in Figure 1. The pointer of the scale swings around a certain position, which indicates that a large number of balls impact the pan, resulting in a constant and uniform pressure on the pan. In a certain period of time, More pressure on the scale pan the greater one, the current textbook experiment and its existing problems For the above, the author through careful reading and experiment found that there are some questions