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高中物理(甲种本)第二册238页有一个说明气体导电的实验.我认为这个实验的方法和论点都是值得商榷的.实验中说:“取两个验电器,让一个带正电,另一个带负电,并使它们上端的金属球互相靠近,如果空气是干燥的,验电器的带电状态将保持不变,把酒精灯火焰置于两个金属球之间,可看到两个验电器很快就不带电了.说明这时空气变成了导体,把两个验电器导通了”.实验装置见图1(验电器需要自己改装).
High school physics (A kind) this second volume of 238 pages has a description of the experiment of gas conduction. I think this experiment method and argument are worthy of deliberation. The experiment said: “take two electroscopes, let one positive The other is negatively charged and brings their upper metal balls close to each other. If the air is dry, the live state of the electroscope will remain unchanged. Put the flame of the alcohol lamp between the two metal balls and you can see two. The electroscope will not be energized soon. It shows that when the air becomes a conductor, the two electroscopes are turned on.” The experimental device is shown in Figure 1 (the electroscope needs to be modified by itself).