Description: Moving coil galvanometer.

Caption: Paul established a small workshop in 1891 and became involved in the early cinema industry pirating Edison's Kinetoscope projectors. Although Edison did not have a British patent on the projector he did have one on the camera so Paul could not get any film.

Introduction: This instrument is a variation of the unipivot galvanometer designed by Robert W. Paul. The unipivot is rather like the Meylan d'Asonval instrument (see GLAHM 105122) but it is more accurate and in Paul's version, although not this one, much more compact.

Background: With cameraman Birt Acres (1854-1918) Paul designed and built a camera. In 1895. Birt became the first cameraman to make a British motion picture. Paul went into motion picture production and in1898 he constructed Britain's first motion picture studio at Muswell Hill, North London.

Historical Context: Design of the first galvanometer - Who: Schweigger, Johann Salomon Christoph (1779-1857) German physicist

Historical Context: Design of the first galvanometer by Schweigger - When: 1820 - Where: Halle, Germany

Historical Context: Design of the first moving coil galvanometer - Who: Sturgeon, William (1783-1850) English physicist and inventor

Historical Context: Design of the first moving coil galvanometer by Sturgeon - When: 1826

Historical Context: Design of the first moving coil galvanometer by Sturgeon, East India Company Royal Military College - Where: Addiscombe, Surrey, England

Historical Context: Discovery of the electromagnetic effect - Who: Oersted, Hans Christian (1777-1851) Danish Physicist

Historical Context: Discovery of the electromagnetic effect by Oersted - When: 1819 - Where: Copenhagen, Denmark

Historical Context: Donaion to the Hunterian Museum by the Department of Physics and Astronomy formerely the Department of Natural Philosophy - Where: University Avenue, Glasgow, Scotland

Historical Context: Donation to the Hunterian Museum - Who: Department of Physics and Astronomy formerely the Department of Natural Philosophy, University of Glasgow

Historical Context: Donation to the Hunterian Museum by the Department of Physics and Astronomy formerely the Department of Natural Philosophy - When: 1992

Historical Context: Manufacture - When: circa 1904 - Where: 16, 18, and 20 Cambridge Street, Glasgow, Scotland - Who: Kelvin & James White Ltd Glasgow & London

Historical Context: Reintroduction of the moving coil galvanometer as a measuring instrument by d'Aesonval - When: 1882

Historical Context: Reintroduction of the moving coil galvanometer as a measuring instrument by d'Arsonval - Where: Paris, France

Historical Context: Reintroduction of the moving coil galvanometer as a measuring instument - Who: Arsonval, Jacques-Arsene d' (1851-1940)

Historical Context: Use of the moving coil galvanometer movement as a telegraph signal detector - Who: Thomson, William, Professor (1824-1907) Sir William Thomson from 1866 and Ist Baron Kelvin of Largs from 1892 better known as Lord Kelvin

Historical Context: Use of the moving coil galvanometer movement as a telegraph signal detector by Lord Kelvin - When: circa 1865 - Where: Glasgow, Scotland