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Moritz Hermann Jacobi was a German physicist and engineer He was born om September 21 1801 in Potsdam Germany Jacobi graduated from the Getingen University and in 1834 he moved to Kenigsberg where he worked as an architect In 1835 Jacobi received professorship at the Derpt University but two years later in 1937 he decided to move to St Petersburg Jacobi worked as a leading researcher at the Academy of Sciences in St Petersburg alongside others such as the chemist Mendeliev Jacobi was one of a rising number of physicists working on the practical applications of electricity and engaged in a number of studies of great interest in the fast developing subject In his first work reported to the St Petersburg Academy he described his investigation of the power of an electromagnet in relation to the design of motors and generators and discussed his efforts to construct the first full-scale practical motor in May 1834 He carried out a number of tests on the motor for instance measuring its output by determining the amount of zinc consumed by the battery In 1838 Jacobi discovered galvanoplastics also called electrotyping and through his success and the presentations he gave he promoted this specialist field and the application of galvanoplastics and electroplating in Europe This medal is memorizing Jacobis contribution to the development of galvanoplasticsElectrotyping is electroforming process for making duplicate plates for relief or letterpress printing The process was first announced in 1838 by MH von Jacobi a German working in St Petersburg Russia Thomas Spencer and CJ Jordan of England and Joseph A Adams of the United States produced similar results the following year An electrotype or electro is made by electroplating a thin shell of copper or other metal onto a mold usually wax of the original cut or type form and then removing the mold and backing the shell with metal More durable than type and cuts electros are used instead
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