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An early mirror galvanometer was invented in 1826 by Johann Christian Poggendorff. [citation needed] An astatic galvanometer was invented by Hermann von Helmholtz in 1849; a more sensitive version of that device, the Thomson mirror galvanometer, was patented in 1858 by William Thomson (Lord Kelvin). [3]
In 1836 he established the journal Annals of Electricity, Magnetism and Chemistry, and in the same year he invented a galvanometer. [2] Sturgeon was a close associate of John Peter Gassiot and Charles Vincent Walker, and the three were instrumental in founding the London Electrical Society in 1837. [3]
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]
Leopoldo Nobili, born on 5 July 1784 [1] in Trassilico and died on 22 August 1835 [1] in Florence, was an Italian physicist who invented a number of instruments critical to investigating thermodynamics and electrochemistry. Born Trassilico, Garfagnana, after attending the Military Academy of Modena he became an artillery officer.
Jacques-Arsène d'Arsonval (8 June 1851 – 31 December 1940) was a French physician, physicist and inventor of the moving-coil D'Arsonval galvanometer and the thermocouple ammeter. D'Arsonval was an important contributor to the emerging field of electrophysiology , the study of the effects of electricity on biological organisms , in the ...
Late 19th or early 20th century. This galvanometer was used at the transatlantic cable station, Halifax, NS, Canada Modern mirror galvanometer from Scanlab. A mirror galvanometer is an ammeter that indicates it has sensed an electric current by deflecting a light beam with a mirror. The beam of light projected on a scale acts as a long massless ...
Willem Einthoven on Nobelprize.org including the Nobel Lecture on December 11, 1925 The String Galvanometer and the Measurement of the Action Currents of the Heart; Einthoven's triangle; Bibliography in the Virtual Laboratory of the Max Planck Institute for the History of Science; Museum Boerhaave Negen Nederlandse Nobelprijswinnaars; Jack the ...
André-Marie Ampère (UK: / ˈ æ m p ɛər /, US: / ˈ æ m p ɪər /; [1] French: [ɑ̃dʁe maʁi ɑ̃pɛʁ]; 20 January 1775 – 10 June 1836) [2] was a French physicist and mathematician who was one of the founders of the science of classical electromagnetism, which he referred to as electrodynamics.