Louis-François-Clement Breguet
Louis Clément François Breguet (22 December 1804 – 27 October 1883) was a French physicist and watchmaker, noted for his work in the early days of telegraphy. • Illustration — Louis Breguet, 1804–1883 by Nadar Educated in Switzerland, Breguet was the grandson of Abraham-Louis Breguet, founder of the watch manufacturing company Breguet. He became manager of Breguet et Fils watchmakers in 1833 after his father Louis Antoine Breguet retired. Between 1835 and 1840 he standardized the company product line of watches, then making 350 watches per year, and diversified into scientific instruments, electrical devices, recording instruments, an electric thermometer, telegraph instruments and electrically synchronized clocks.
Also recorded as Louis Clément Bréguet · Louis Breguet
Louis-François-Clement Breguet
Nadar · This file comes from Gallica Digital Library and is available under the digital ID btv1b53134157c · Public domain
- Born
- 1804
- Died
- 1883
- Nationality
- France
- Occupation
- physicist · watchmaker
- Known for
- engine order telegraph · Foy–Breguet telegraph
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Louis Clément François Breguet (22 December 1804 – 27 October 1883) was a French physicist and watchmaker, noted for his work in the early days of telegraphy. • Illustration — Louis Breguet, 1804–1883 by Nadar Educated in Switzerland, Breguet was the grandson of Abraham-Louis Breguet, founder of the watch manufacturing company Breguet. He became manager of Breguet et Fils watchmakers in 1833 after his father Louis Antoine Breguet retired. Between 1835 and 1840 he standardized the company product line of watches, then making 350 watches per year, and diversified into scientific instruments, electrical devices, recording instruments, an electric thermometer, telegraph instruments and electrically synchronized clocks.
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Identity and origins
Identity and origins
He observed in 1847 that small wires could be used to protect telegraph installations from lightning, the ancestor of the fuse. In 1850 he manufactured a rotating mirror used by Hippolyte Fizeau to measure the relative speed of light in air and water. In 1856 he designed a public network of synchronized electric clocks for the center of Lyon. In 1866 he patented an electric clock controlled by a 100 Hz tuning fork. In 1870 he transferred the leadership of the company to Edward Brown. Breguet then focused entirely on the telegraph and the nascent field of telecommunications. He collaborated in the development of an induction coil, later improved by Heinrich Ruhmkorff. In terms of honors, in 1843 he was appointed to the Bureau of Longitudes. In 1845 Breguet was awarded the Legion d'Honneur. He was made a member of the French Academy of Sciences in 1874, and was elevated to Officer of the Legion d'Honneur in 1877. He is one of the 72 French scientists whose names are written around the base of the Eiffel Tower. Breguet was married and had one son Antoine (1851–1882) who also joined the family electrical business. He was the grandfather of Louis Charles Breguet and the uncle of Sophie Berthelot.
Louis-François-Clement Breguet was recorded at birth as Louis Clément François Venture. The authorities additionally record the headings Louis Clément Bréguet and Louis Breguet. His recorded language was French. He was the child of Antoine-Louis Breguet. 3 children are recorded: Antoine Breguet, Madeleine Breguet and Louise Bréguet. Other recorded relations include Abraham-Louis Breguet and Sophie Berthelot.
Life and career
Dated record
Life and career
The full dated record · 2 entries
1804
Louis-François-Clement Breguet born at former 11th arrondissement of Paris.
1883
Louis-François-Clement Breguet died on 27 October 1883.
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Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Nature July 15, 1886, volume 34, page 259
- 2.Carl W. Hall A biographical dictionary of people in engineering, Purdue University Press, 2008 , p. 26
- 3.Huurdeman page 73
- 4.Tobin, William John. The Life and Science of Leon Foucault: The Man Who Proved the Earth Rotates. Cambridge University Press. 2003. 9780521808552.
- 5.Tuning Fork. www.crazywatches.pl.
- 6.Maurice Crosland Science Under Control: The French Academy of Sciences 1795-1914 Cambridge University Press, 2002. p.140
- 7.Scientific American: Supplement, Volume 22, September 18, 1886, page 8929
- 8.Hubert Chanson, Hydraulic Engineering Legends Listed on the Eiffel Tower, in Jerry R. Rogers (ed) Great rivers history: proceedings and invited papers for the EWRI Congress and History Symposium, ASCE Publications, 2009, , page 6
- 9.Archived copy.
- 10.Anton A. Huurdeman The worldwide history of telecommunications page 168
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