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Luigi Galvani

medical science
Luigi Galvani and the Discovery of Bioelectricity

Luigi Galvani and the Discovery of Bioelectricity

Tabea Tietz
On September 9, 1737, Italian physician, physicist and philosopher Luigi Aloisio Galvani was born. He is best known for his discoveries in bioelectricity. In particular, he discovered that the muscles of dead frogs legs twitched when struck by a spark. As a legacy, Galvani’s name survives in the Galvanic cell, Galvani potential, galvanic corrosion, the galvanometer and galvanization. Moreover, his reports also heavily influenced famous author Mary Shelley writing her novel ‘Frankenstein‘.[4] “When…
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explorer
On the Road with Alexander von Humboldt

On the Road with Alexander von Humboldt

Harald Sack
On August 3, 1804 geographer, naturalist, and explorer Alexander von Humboldt returned home from his great South America scientific discovery journey. “I am more and more convinced that our happiness or unhappiness depends more on the way we meet the events of life than on the nature of those events themselves”. – Alexander von Humboldt Aimé Bonpland and Daniel Kehlmann Actually, Humboldt did not make this journey all alone. He had a…
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physics
Alessandro Volta and the Electricity

Alessandro Volta and the Electricity

Harald Sack
On March 20, 1800, Italian physicist Alessandro Volta informed the British Royal Society in London about his newly invented electric power source, the Voltaic pile, the first energy source technology capable of producing a steady, continuous flow of electricity. “The language of experiment is more authoritative than any reasoning: facts can destroy our ratiocination—not vice versa. “ — Count Alessandro Giuseppe Antonio Anastasio Volta, Quoted in [12] First Experiments with Eletricity Alessandro…
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physics
Nicholas Callan and the Induction Coil

Nicholas Callan and the Induction Coil

Tabea Tietz
On December 22, 1799, Irish priest and physicist Nicholas Callan was born. Callan invented the induction coil (1836) before that of better-known Heinrich Ruhmkorff. Callan‘s coil was built using a horseshoe shaped iron bar wound with a secondary coil of thin insulated wire under a separate winding of thick insulated wire as the “primary” coil. Each time a battery‘s current through the “primary” coil was interrupted, a high voltage current was produced in…
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