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在中学物理教科书中都说:液体内部的压强是液体的重量产生的.在失重情况下,液体对于容器就没有压强了.而在讨论气体压强问题时,教材用大量沙粒对圆盘的不断碰撞产生了压力的实验,进而引申、推断出气体分子对容器壁也会产生压力.气体分子作热运动,大量气体分子不断地和容器壁碰?
In the middle school physics textbooks, it is said that the pressure inside the liquid is produced by the weight of the liquid. Under the weightless condition, the liquid does not have any pressure on the container. When discussing the gas pressure problem, the teaching material uses a large amount of sand particles on the disc. The collision produced a pressure experiment, which further extended and inferred that gas molecules also exerted pressure on the vessel wall. The gas molecules used heat to move, and a large number of gas molecules constantly touched the container wall.