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静电感应现象是电学中的重要现象之一,它看不见、摸不着,只能用实验手段将其呈现出来。笔者经过研究发现,以易拉罐较薄的侧壁为材料制成的小轮,可生动形象地展示摩擦起电、静电感应、电荷间的相互作用等现象,效果较好。现将静电感应小轮的制作方法、演示方法及实验现象介绍如下。一、制作材料易拉罐空罐一个,有机塑料板一块,厚度为2.5 cm的泡沫塑料块两块,长为6.5 cm的缝衣针一根,子母
Electrostatic induction phenomenon is one of the important phenomena in electricity, it can not see, touch, can only be used to present it experimentally. The author after research found that the thin side of the cans for the material made of small round, vivid display of triboelectric charge, electrostatic induction, the interaction between charges and other phenomena, the effect is better. Now electrostatic induction wheel production methods, demonstration methods and experimental phenomena are as follows. First, the production of cans An empty cans, a piece of organic plastic board, a thickness of 2.5 cm foam block two, a length of 6.5 cm a needle, the mother