William Thomson, (Lord Kelvin)

220px-Lord_Kelvin_photographWilliam Thomson, 1st Baron Kelvin (Great Britain; 26 June 1824 – 17 December 1907) Mathematical physicist and engineer. He did important work in the mathematical analysis of electricity and thermodynamics, and did much to unify the emerging discipline of physics in its modern form. He is best known for an absolute temperature scale, he developed with James Prescott Joule, called the Kelvin scale. This is a temperature scale in which zero represents the point at which there is absolutely no kinetic energy (or heat energy). He was also a telegraph engineer, and was elected to the board of directors of the Atlantic Telegraph Company in recognition of work he did to help with the problem of transmission rate in the Transatlantic telegraph cable. Thomson had produced a mathematical analysis of the propagation of electrical signals into telegraph cables based on their capacitance and resistance. In higher speed data cables, such as today’s Cat 5, it is necessary to factor in inductance as well. Read more…

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