1786 – electrical stimulation

In 1786, in Bologna Italy, Luigi Galvani noticed that the muscles of a dead frog twitched when they came in contact with a metal probe and there were sparks visible between the probe and the frog muscle. Galvani made the assumption that the sparks came from the frog muscle. His associate, Alessandro Volta disagreed with the assumption about the origin and continued to investigate the phenomenon. Eventually, around 1800, Volta produced the first chemical electrical battery consisting of zinc and silver plates separated by cardboard soaked in brine. This became known as a “voltaic pile”.

PRECURSOR:
1596 – Descartes
1600 – De Magnete
1627 – Boyle
1642 – Newton
1666 – Gray
1749 – LaPlace
1663 – friction electric generator

CONCURRENT:
1736 – Coulomb
1737 – Galvani
1745 – Volta

SUCCESSOR:
1785 – Franklin
1791 – Faraday
1873 – electromagnetic waves

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