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纵观物理学史可以看出,有许多重要的物理发现往往是在偶然情况下获得的。关于电流,我们知道是意大利波罗那大学解剖学教授伽伐尼(Galvani,1737—1798)在1780年的一次实验中偶然发现的。当时,伽伐尼和他的两名助手正在作青蛙解剖实验,他将解剖好的一只青蛙随手放在桌上,一名助手不慎将解剖刀的刀尖触到蛙腿的神经上,顿时青蛙的四条腿猛烈地发生痉挛,此刻,放在一旁的起电机跳起了大火花。伽伐尼立即注意到并抓住了这一意外偶然发生的现象,深入作了研究,从而发现了电流。对此,意大
Looking at the history of physics, it can be seen that there are many important physical discoveries that are often obtained by chance. About electric current, we know that accidentally discovered by Galvani (1737-1798), professor of anatomy at the University of Bolonia, Italy, in an experiment in 1780. At that time, Galvani and his two assistants were doing frog dissection experiments. He placed a dissected frog on the table and an assistant accidentally touched the tip of the scalpel on the nerves of the frog’s leg. Suddenly, the frog’s four legs slammed violently. At the moment, the starting motor placed on the side jumped into a big spark. Galvani immediately noticed and seized this accidental accidental phenomenon, studied it in depth, and discovered current. In this regard, Italy