读本刊1991年第6期《巧看电荷的转移》一文后,颇受启迪.该实验简单易制,效果明显,颇能激发学生的兴趣.但在说明上似有欠妥之处.如“……,可说明用毛织物摩擦过的塑料板上带了电荷,这些电荷又很快地转移到了金属板上——导体善于导电,又从金属板的尖角处迅速释放出来.”(着重号是笔者加的)我们认为在这里只能是带电的塑料板使金属板感应带电,不能 After reading this article in the 6th issue of the book “The transfer of the charge”, it was quite inspired. The experiment was simple and easy to make, and the effect was obvious. It was quite inspiring to students’ interest. But there was something wrong with the explanation. “..., it can be stated that the plastic plates that were rubbed with the woolen fabrics are charged, and these charges are quickly transferred to the metal plate - the conductors are good at conducting electricity, and are quickly released from the sharp corners of the metal plate.” The emphasis is on the author’s plus. We believe that only the charged plastic plate can make the metal plate inductively charged.