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If it hadn't been for Alessandro Volta, you might have frogs in your radios and flashlights instead of batteries. Back in 1771, Luigi Galvani, one of Volta's friends and fellow-Italians, noticed a strange reaction when a frog's leg came into contact with a spark from a machine – it twitched. Believing that the twitch originated in the frogs leg itself, Galvani devised an "animal electricity" experiment by setting a frogs\leg between two different metals. Sure enough, the muscles in the frogs leg twitched. Being a man of science, when Volta heard of his friend's experiment, he decided to put it to the test. In his own experiments he also saw that the frogs leg twitched when set between two metals, but he did not share in Galvani's conclusion that the electrical current came from the muscles in the frogs leg. And thus began the invention of the first battery.