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Dr James Robert Erskine-Murray FRSE MIEE (1868-1927) was a Scottish electrical engineer and inventor. A protege of Lord Kelvin, he also worked with Marconi and was a pioneer in the development of the telegraph. He wrote extensively on telegraphy and wireless communication.
Lord Kelvin (26 June 1824 – 17 December 1907) was a British mathematician, mathematical physicist and engineer. Born in Belfast , he was Professor of Natural Philosophy at the University of Glasgow for 53 years, where he undertook significant research, including on electricity and the formulation of the first and second laws of thermodynamics .
Developed by Lord Kelvin, this is the most sensitive and accurate of all the mechanical electrometers. The original design uses a light aluminum sector suspended inside a drum cut into four segments. The original design uses a light aluminum sector suspended inside a drum cut into four segments.
The mirror galvanometer designed by Lord Kelvin made it easier to read weak signals, [146] and larger cables with thicker insulation had less retardation. [ 147 ] In 1854, Kelvin produced a mathematical description of retardation by analogy with heat flow after the fiasco with the first transatlantic cable.
The law of squares was proposed by William Thomson (later to become Lord Kelvin) in 1854 at Glasgow University.He had some input from George Gabriel Stokes.Thomson and Stokes were interested in investigating the feasibility of the proposed transatlantic telegraph cable.
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Lord Kelvin was commemorated on the £20 note issued by the Clydesdale Bank in 1971; in the current issue of banknotes, his image appears on the bank's £100 note. He is shown holding his adjustable compass and in the background is a map of the transatlantic cable.