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六年制重点中学高中课本第二册第一章[实验1—1],是验证水分子为极性分子的实验,如按课本操作(见课本第19页),把摩擦带电的玻璃棒或塑料棒接近水流,则水流的方向偏转不明显。在教学中,我们用感应起电机代替经摩擦带电的玻璃棒或塑料棒,水流偏转明显,实验效果很好。这是因为用毛皮摩擦后的玻璃棒或塑料棒所带电荷较少,而用感应起电机可获得大量电荷。
The first chapter of the six-year key middle school high school textbook, Book One [Experiment 1-1], is an experiment that verifies that water molecules are polar molecules. For example, textbook operations (see page 19 of the textbook), friction-charged glass rods or When the plastic rod is close to the water flow, the direction of the water flow is not obvious. In teaching, we use induction motor instead of triboelectrically charged glass rod or plastic rod, the water flow deflection is obvious, and the experimental results are very good. This is because glass rods or plastic rods that are rubbed with a fur have less charge, and a large amount of charge can be obtained by using an inductive motor.