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The frog's legs twitched as the discharge happened. [6] Galvani found that he could make the prepared leg of a frog (see the Construction section) twitch by connecting a metal circuit from a nerve to a muscle, thus inventing the first frog galvanoscope. [7] Galvani published these results in 1791 in De viribus electricitatis. [8]
Galvanism: electrodes touch a frog, and the legs twitch into the upward position [1]. Galvanism is a term invented by the late 18th-century physicist and chemist Alessandro Volta to refer to the generation of electric current by chemical action. [2]
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An early D'Arsonval galvanometer showing magnet and rotating coil. A galvanometer is an electromechanical measuring instrument for electric current.Early galvanometers were uncalibrated, but improved versions, called ammeters, were calibrated and could measure the flow of current more precisely.
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Experiment De viribus electricitatis in motu musculari Late 1780s diagram of Galvani's experiment on frog legs. Luigi Galvani was born to Domenico Galvani and Barbara Caterina Foschi, in Bologna, then part of the Papal States. [6]
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Matteucci's frog battery, 1845 (top left); Aldini's frog battery, 1818 (bottom); apparatus for controlled exposure of gases to frog battery (top right). A frog battery is an electrochemical battery consisting of a number of dead frogs (or sometimes live ones), which form the cells of the battery connected in a series arrangement.