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贵刊1993年第10期在“自然实验”中刊出了林春富老师的“《导体、绝缘体、半导体》教学建议”一文,我读后进行了反复斟酌和实验,但实验效果不明显,我是这样进行这个实验的。 1.用低压电源,演示大型电表的检流计,二个鱼夹组成检流器。将低压电源旋至8V档,先把两个鱼夹碰到一起,电流计指针偏转后,让一名学生两手捏住鱼夹金属部分,电流计指针也偏转,说明人体是导体。
In your article “Nature Experiments”, Lin Chun-fu's “Teaching Suggestions for Conductors, Insulators, and Semiconductors” was published in a paper entitled “Nature Experiments”. After I read it, I made repeated discretions and experiments, but the experimental results were not obvious. This is the experiment. 1. With low-voltage power supply, demonstrate the large ammeter galvanometer, two fish clips form a current collector. The low-voltage power supply to the 8V file, the first two fish clips together, galvanometer pointer deflection, so that a student pinch the metal folder with both hands, galvanometer pointer deflection, indicating that the human body is a conductor.