Document Details De quelle pr?cision a-t-on r?ellement besoin en mer ? Quelques aspects de la diffusion des m?thodes de d?termination astronomique et chronom?trique ..:
Number of documents found: 1
- Title: De quelle pr?cision a-t-on r?ellement besoin en mer ? Quelques aspects de la diffusion des m?thodes de d?termination astronomique et chronom?trique ..
SubTitle: ...des longitudes en mer en France, de Lacaille ? Mouchez (1750-1880) [Abstract of Article in Histoire et Mesure 2006-2 - ISSN 0982-1783 - p.121-156] - Author: Guy Boistel
- Publisher:
Keywords: astronomy clock
Other Keywords: longitude
ISBN: ISSN 0982-1783
Language: ENG FRE
Notes: Abstact of article: During the 18th and 19th centuries, the methods and the instruments of nautical astronomy evolved clearly, offering to seafarers two complementary sets of methods for the detetmination of the longitudes at sea: the lunar distances and methods using timekeepers. When abbot Nicolas-Louis de Lacaille developed a graphic method in 1759, which allowed the seafarers to reach quickly one degree of reasonable precision on the longitudes, a few years later, the Chevalier de Borda answered with a more ambitious mathematical method, developed for the elites, which led to a higher accuracy of the computations. One century later, the officer Ernest Mouchez and the astronomer Antoine Yvon-Villarceau opposed in similar terms on the degree of the mathematics implemented in the methods employed for the control of the thermal drift of the timekeepers. Thus, it is possible to consider in a same run up, the history of some hundred fifty years of high astronomical navigation, between the 1750s and the end of the 19th century. This study also approaches a new view, the questions of the dissemination of the knowledges, and of the vocational training of both the naval officers and the captains and pilots of the merchant marine. Plan de l'article ? 1. Lacaille contre Borda. La m?thode des distances lunaires en question au xviiie si?cle ? Lacaille et les longitudes en mer ? De quelle pr?cision a-t-on r?ellement besoin en mer ? ? La codification d?une m?thode pour les ?lites par Borda ? Jugements de Borda sur les distances lunaires selon Lacaille ? La m?thode de Borda ? la port?e des marins ? ? 2. Comment contr?ler la d?rive thermique de la marche des chronom?tres ? ? La querelle entre le marin Mouchez et l?astronome Yvon-Villarceau, entre 1875 et 1879 - Bibliographie
Edition: 2006-2 -- Copyright: 2006
Kind: Article
Type: Marine Chronometer
Geographic area: France
Topic: History
Organization: NA/other
Pages: 1 -- Height in cm: 27
Print Status: 1 (1 means in print - 2 means out of print)
Entered By: fortunat
BHM No: 14257 - Publisher:
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