Josiah Latimer Clark
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Josiah Latimer Clark FRS[1] FRAS[2] (10 March 1822 – 30 October 1898) was an English electrical engineer, born in Great Marlow, Buckinghamshire.[3]
Biography
Josiah Latimer Clark was born in Great Marlow, Buckinghamshire,Lua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found. and was the younger brother to Edwin Clark (1814–1894). Latimer Clark studied chemistry at school. His first job was a large Dublin chemical manufacturing establishment. In 1848 he started to work in his brother Edwin's civil engineering practice and became assistant engineer at the Menai Strait bridge.[4] Two years later, when his brother was appointed Engineer to the Electric Telegraph Company, he again acted as his assistant, and subsequently succeeded him as Chief Engineer. In 1854, he took out a patent "for conveying letters or parcels between places by the pressure of air and vacuum," and later, in 1863, was concerned in the construction, by the London Pneumatic Despatch Company, of a tube between the London North-West District post office and Euston station, London.Lua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found.
About the same period he was engaged in experimental researches on the propagation of the electric current in submarine cables, on which he published a pamphlet in 1855, and in 1859 he was a member of the committee that was appointed by the government to consider the numerous failures of submarine cable enterprises.Lua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found. He later realised that Francis Ronalds had described the risk and cause of signal retardation in telegraph lines as early as 1816 and he thereafter devoted significant effort to bringing Ronalds' telegraphic achievements to public attention.[5][6] He was President of the Society of Telegraph Engineers in 1875 when Ronalds' renowned electrical library was gifted to the new Society.
Clark paid much attention to the subject of electrical measurement, and besides designing various improvements in method and apparatus and inventing the Clark standard cell, he took a leading part in the movement for the systematization of electrical standards, which was inaugurated by the paper which he and Sir CT Bright read on the question before the British Association in 1861. With Bright also he devised improvements in the insulation of submarine cables. In the later part of his life he was a member of several firms engaged in laying submarine cables, in manufacturing electrical appliances, and in hydraulic engineering.Lua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found. Clark was one of the first authors to attach the metric prefixes mega- and micro- to units other than the metre.[7]
Clark died in London on 30 October 1898.Lua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found.
Family
In 1854 Clark married Margaret Helen Preece, sister of Sir William Preece. They had two children, but divorced in 1861. Clark remarried in 1863.[2]
Publications
Elementary Treatise on Electrical Measurement, for the use of Telegraph Inspectors and Operators (1868),
Electrical Tables and Formulæ, for the use of Telegraph Inspectors and Operators (1871),
A Treatise on the Transit Instrument as Applied to the Determination of Time, for the use of Country Gentlemen (1882),
A Manual of the Transit Instrument (1882),
The Star Guide (with Herbert Sadler, 1886),
Transit Tables (annually 1884-1888),
A Dictionary of Metric and other useful Measures (1891),
A Memoir of Sir W. F. Cooke (1895).
Notes
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- ^ Page Module:Citation/CS1/styles.css has no content."Search Results". catalogues.royalsociety.org. Retrieved 22 December 2021.
- ^ a b Page Module:Citation/CS1/styles.css has no content."1899MNRAS..59..219. Page 219". Monthly Notices of the Royal Astronomical Society. 59: 219. 1899. Bibcode:1899MNRAS..59..219.. doi:10.1093/mnras/59.5.219. Retrieved 5 February 2017.
- ^ Script error: No such module "template wrapper".
- ^ Page Module:Citation/CS1/styles.css has no content."Obituary". Journal of the Institution of Electrical Engineers, Vol XXVIII, 1899. Robert Stephenson Trust. Archived from the original on 3 January 2018. Retrieved 30 December 2012.
- ^ Page Module:Citation/CS1/styles.css has no content.Ronalds, B.F. (2016). Sir Francis Ronalds: Father of the Electric Telegraph. London: Imperial College Press. ISBN 978-1-78326-917-4.
- ^ Page Module:Citation/CS1/styles.css has no content.Ronalds, B.F. (2016). "Sir Francis Ronalds and the Electric Telegraph". International Journal for the History of Engineering & Technology. 86: 42–55. doi:10.1080/17581206.2015.1119481. S2CID 113256632.
- ^ Latimer Clark, An Elementary Treatise on Electrical Measurement, 1868
References
- This article incorporates text from a publication now in the public domain: Script error: No such module "template wrapper".
External links
- Josiah Latimer Clark
- Obituary (Journal of the Institution of Electrical Engineers, Vol XXVIII, 1899)
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