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  2. Mirror galvanometer - Wikipedia

    en.wikipedia.org/wiki/Mirror_galvanometer

    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 ...

  3. Syphon recorder - Wikipedia

    en.wikipedia.org/wiki/Syphon_recorder

    The disadvantage of the mirror galvanometer was that it required two operators, one with a steady eye to read and call off the signal, the other to write down the characters received. [3] Its use spread to ordinary telegraph lines and radiotelegraphy radio receivers. A major advantage of the syphon recorder was that no operator has to monitor ...

  4. Leopoldo Nobili - Wikipedia

    en.wikipedia.org/wiki/Leopoldo_Nobili

    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.

  5. Johann Christian Poggendorff - Wikipedia

    en.wikipedia.org/wiki/Johann_Christian_Poggendorff

    In 1826, Poggendorff developed the mirror galvanometer, a device for detecting electric currents. He had an extraordinary memory, well stored with scientific knowledge, both modern and historical, a cool and impartial judgment, and a strong preference for facts as against theory of the speculative kind.

  6. 2010-12-21 00:31 Williamgelbart 595×842 (637659 bytes) Ballistic galvanometer calibration setup. The standard capacitor is charged by a standard cell, discharged through the galvanometer and the deflection recorded. 2010-12-22 05:24 Williamgelbart 595×842 (9493 bytes)

  7. Robert William Thomson - Wikipedia

    en.wikipedia.org/wiki/Robert_William_Thomson

    Robert William Thomson PRSSA FRSE (29 June 1822 – 8 March 1873) was a Scottish inventor known for inventing the refillable fountain pen and the pneumatic tyre. [ 1 ] Life

  8. George Paget Thomson - Wikipedia

    en.wikipedia.org/wiki/George_Paget_Thomson

    Thomson was born in Cambridge, England, the son of physicist and Nobel laureate J. J. Thomson and Rose Elisabeth Paget, daughter of George Edward Paget.Thomson went to The Perse School, Cambridge before going on to read mathematics and physics at Trinity College, Cambridge, until the outbreak of World War I in 1914, when he was commissioned into the Queen's Royal West Surrey Regiment.

  9. Lord Kelvin - Wikipedia

    en.wikipedia.org/wiki/Lord_Kelvin

    William Thomson, 1st Baron Kelvin (26 June 1824 – 17 December 1907 [7]), was a British mathematician, mathematical physicist and engineer. [8] [9] Born in Belfast, he was the professor of Natural Philosophy at the University of Glasgow for 53 years, where he undertook significant research and mathematical analysis of electricity, was instrumental in the formulation of the first and second ...