Lord Kelvin also devised a combined influence machine and electromagnetic machine, commonly called a mouse mill, for electrifying the ink in connection with his siphon recorder, and a water-drop electrostatic generator ( 1867 ), which he called the " " water-dropping condenser " ".
32.
Additionally, the Institute's " Electricity " exhibition highlights one of Franklin's lightning rods, his electricity tube, a Franklin Electrostatic Generator, the 1751 publication of Franklin's " Experiments and Observations on Electricity ", and Thornton Oakley's two 1940 historical murals of Franklin and the " Kite and Key " experiment.
33.
By the end of the 17th Century, researchers had developed practical means of generating electricity by friction with an electrostatic generator, but the development of electrostatic machines did not begin in earnest until the 18th century, when they became fundamental instruments in the studies about the new science of electricity.
34.
Electrostatic generators from this era were sometimes referred to as " Toepler-Holtz machines ", being named in conjunction with German physicist August Toepler ( 1836 1912 ), who during the same time period, constructed an " influence machine " independent of Holtz, and is often credited as being its initial inventor.
35.
In 1783 1784 he used the suggestions of Martinus van Marum, who also had a history of designing electrostatic generators and who had already been in touch with Cuthbertson, in 1774 and 1781, to build the ( at that time ) largest glass plate electrostatic generator in existence for the Teylers Tweede Genootschap of the Teylers Stichting.
36.
In 1783 1784 he used the suggestions of Martinus van Marum, who also had a history of designing electrostatic generators and who had already been in touch with Cuthbertson, in 1774 and 1781, to build the ( at that time ) largest glass plate electrostatic generator in existence for the Teylers Tweede Genootschap of the Teylers Stichting.
37.
During the Second World War, he obtained his U . S . citizenship and became a contract researcher for the U . S . Office of Scientific Research and Development in 1942, then during 1943 46 he served as head of the Electrostatic Generator Group for the Manhattan Project, being placed in charge of Van de Graaff work.
38.
Edward Nairne developed an electrostatic generator for medical purposes in 1787 which had the ability to generate either positive or negative electricity, the first named being collected from the prime conductor carrying the collecting points and the second from another prime conductor carrying the friction pad . " be free ) 16 : 46, 7 November 2011 ( UTC)
