Luigi Galvani used an electrostatic machine that produced sparks on frog legs and began to investigate the muscular contractions produced by electricity. Galvani discovered that the frog leg would contract if a scalpel touched the frog’s nerves when the machine was on.
More comprehensive experiments by Galvani showed that a dead frog’s leg could be made to twitch by electrical stimulation. Galvani also showed that the same twitching could be produced by touching the leg with a copper hook hung from an iron nail. This led him to conclude that the electricity that caused the frog’s legs to twitch was coming from within the frog and he described it as animal electricity. Fundamentally, Galvani to a certain extent was right as animals do produce