你可以找个天气干燥的日子,在地毯上摩擦袜子,然后再去摸摸金属门把手,或者摸摸你朋友的头发。噼啪!一个小小的火花跳了出来——这就是电。那么在黑暗中闪耀的火花又是什么?这些火花就是跳跃的电子。当你在地毯上摩擦袜子的时候,一些电子从地毯上转移到了你的袜子和皮肤上。于是你的袜子(和你自己)就得到了多余的负电荷。 You can find a dry day, rub the socks on the carpet, and then touch the metal door handle, or touch your friend’s hair. Crack! A little spark jumped out - this is electricity. What then sparks shine in the darkness? These sparks are the jumping electrons. As you rub the socks on the carpet, some of the electrons are transferred from the carpet to your socks and skin. So your socks (and yourself) get extra negative charges.