In 1780, the Italian physicist Luigi Galvani discovered the irritability of frog muscles caused by electricity (here using a metal arc). Illustration from "Les Merveilles de la science ou description populaire des inventions modernes" written by Louis Figuier and published in 1867 by Furne, Jouvet et Cie.

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Keywords: 18th, 19th, animal, century, development, drawing, electricity, engraving, experiment, experimentation, illustration, invention, italian, italy, legs, men, muscles, physics, progress, science, scientific, technical