人们在很早以前,就已经知道一些鱼类可以放电。法国博物学家爱迪逊,曾被一条电鲶鱼击昏过;苏醒后,他说被电鱼电击的“滋味”与被电瓶电击完全一样。南美洲的一条大河里。生长着许多电鳗,这种鱼鲜美可口,一条鱼就可达二十多公斤重。但是,这种鱼在防御敌人时,可以放电,电压可达800伏。强烈的电流可以迅速击毙青蛙、鱼虾等,甚至可以击倒没有经验的捕鱼人;但是。电鳗不能击倒水牛。人们根据 Long ago, people knew that some fish could discharge. The French naturalist Edison, who had been stunned by an electrical catfish, said after waking up he said the “taste” of an electric shock was exactly the same as a shock from a battery. A big river in South America. Growing with many electric eels, this fish is tasty and delicious, and a fish can weigh more than 20 kilos. However, the fish can discharge at voltages of up to 800 volts while defending their enemies. A strong current can quickly kill frogs, fish and shrimp, and even knock down inexperienced fishermen; however. Electric eel can not knock down buffalo. People based