Italian physicist Count Alessandro Volta

Italian physicist Count Alessandro Volta

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Credit: J-L CHARMET/SCIENCE PHOTO LIBRARY

Caption: Italian physicist Count Alessandro Volta (1745- 1827) demonstrates his newly-invented battery or "Voltaic pile" to Napolean. Volta was the first to show that an electrical current flowed when two dissimilar metals were brought into contact. In 1800 he constructed a device which used this effect to produce a large flow of electricity. Bowls of salt solution were connected together by metal strips, each composed of copper at one end & tin or zinc at the other, and a current was produced. A compact version of this, using a stack of discs of copper, zinc & cardboard moistened with salt solution, was shown to Napolean in 1801.

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Keywords: alessandro, battery, count, invention of, napoleon and volta, portraits, surname v, volta, with napoleon

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