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电学领域是一个非常奇妙的世界,电贯穿于人类社会的各个空间,人类的生产生活哪一方面都离不开电力。人们称不高于36伏特的电压为安全电压,然而,青少年朋友们,你可知道,有些场合人手上竟能有三万伏的高电压,但人体仍安然无恙。让我们通过实验来探讨人体带电的各种现象。在一个凉爽而干燥的日子,取一块干净的聚四氟乙烯平板,面积约为0.35×0.35m~2。另外取一块面积约为0.3×0.3m~2的有机玻璃板。将这两块平板靠近(不能接触),放置在干燥的地上。实验者站在
The field of electricity is a very wonderful world. Electricity runs through all the spaces of human society. Every aspect of human production and life can not be separated from electricity. People say the voltage no higher than 36 volts is the safe voltage. However, young friends, you know, there are occasions where people can have a high voltage of 30,000 volts, but the human body is still safe and sound. Let us explore various phenomena of charged bodies through experiments. In a cool and dry day, take a clean Teflon plate, an area of about 0.35 × 0.35m ~ 2. In addition to take an area of about 0.3 × 0.3m ~ 2 plexiglass plate. Place the two plates near (can not touch) and place on a dry floor. Experimenter stands