000			01514cam a2200205 4500500
005			20250121124715.0
041			_afre
042			_adc
100	1	0	_aDescamps, Pascal _eauthor
245	0	0	_aThe Meridian Line of the Paris Observatory: An Analysis of the Registers of the Observations of Cassini II
260			_c2014.
500			_a57
520			_aThe construction of the meridian line of the Paris Observatory, which had been initiated by his father, was continued by Jacques Cassini, called Cassini II, and fully completed in 1732. The main purpose of this meridian line was to measure the variation of the obliquity of the ecliptic. The object of this article is to study this mea-sure, by carrying out an unprecedented examination of part of the manuscript registers of the Paris Observatory, which include all observations made until the end of the 18th century. The twenty-five years of measures (1730-1755) that will concern us here have not been published before. They represent a wealth of material as yet unexploited, which enables us to grasp more fully the metrological and historical aspects of the meridian line of the Paris Observatory.
690			_aheliometer
690			_aParis Observatory
690			_aobliquity of the ecliptic
690			_aJacques Cassini
786	0		_nRevue d’histoire des sciences | Volume 67 | 1 | 2014-05-23 | p. 35-70 | 0151-4105
856	4	1	_uhttps://shs.cairn.info/journal-revue-d-histoire-des-sciences-2014-1-page-35?lang=en&redirect-ssocas=7080
999			_c563586 _d563586