Luigi Galvani
Luigi Galvani (
September 9 1737–
December 4 1798) was an
Italian physician and
physicist who lived and died in
Bologna.
Dissecting a frog at a table where he had been conducting experiments with
static electricity, Galvani touched an exposed
sciatic nerve of the frog with his metal scalpel, which had picked up a charge. At that moment, he saw the dead frog's leg kick as if in life. The observation made Galvani the first investigator to appreciate the relationship between electricity and animation--or life. He is typically credited with the discovery of biological electricity.
Galvani coined the term
animal electricity to describe whatever it was that activated the muscles of his specimens. Along with contemporaries, he regarded their activation as being generated by an electrical fluid that is carried to the
muscles by the
nerves. The phenomenon was dubbed "
galvanism," after Galvani, on the suggestion of his peer and sometime intellectual adversary
Alessandro Volta.
Galvani's investigations led shortly to the invention of an early
battery, but not by Galvani, who did not perceive electricity as separable from biology. Galvani didn't see electricity as the essence or the stuff itself of life, which he regarded
vitalistically. Thus it was Volta who built the first battery, which became known therefore as a
voltaic pile. While, as Galvani believed, all life is indeed electrical--in that all living things are made of
cells and every cell has a cell potential--biological electricity has the same chemical underpinnings as the flow of current between
electrochemical cells, and thus can be recapitulated in a way outside the body. Volta's intuition was correct as well.
Galvani's name also survives in the
Galvanic cell, the
galvanometer and "
galvanize".
Galvani, Luigi
Galvani, Luigi
Galvani, Luigi
Galvani, Luigi
Galvani, Luigi
Galvani, Luigi
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