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Topic: Cassini de Thury

	CASSINI - LoveToKnow Article on CASSINI (Site not responding. Last check: 2007-10-16)
		JACQUES CASSINI (1677-1756), son of Domenico Cassini, was born at the Paris observatory on the 8th of February 1677.
		CfiSAR FRAN0Is CAsSINI, or CASsINI DE THURY (1714-1784), son of Jacques Cassini, was born at the observatory of Paris on the I7th of June 1714.
		JACQUES DOMINIQUE CASSINI, Count (1748-1845), sofl of Csar Francois Cassini, was born at the observatory of Paris on the 3oth of June 1748.
	7.1911encyclopedia.org /C/CA/CASSINI.htm (847 words)

	C Biographies
		Cassini de Thury was the son of Jaques Cassini and born in Paris on the 17.
		Cassini was the son of César François and born in Paris on the 30.
		Chabrol de Murol was born in Riom on the 18.
	www.plicht.de /chris/files/c.htm (3077 words)

	César-François Cassini de Thury - Wikipedia, the free encyclopedia
		César-François Cassini de Thury (June 17, 1714 – September 4, 1784) was a French astronomer, son of Jacques Cassini.
		Cassini de Thury was born at the Paris Observatory.
		The post of director of the Paris observatory was created for his benefit in 1771, when the establishment ceased to be a dependency of the French Academy of Sciences.
	en.wikipedia.org /wiki/C%C3%A9sar-Fran%C3%A7ois_Cassini_de_Thury (167 words)

	Printable Version on Encyclopedia.com
		CASSINI [Cassini], name of a family of Italian-French astronomers, four generations of whom were directors of the Paris Observatory.
		Gian Domenico Cassini, 1625-1712, was born in Italy and distinguished himself while at Bologna by his studies of the sun and planets, particularly Jupiter; he determined rotational periods for Jupiter, Mars, and Venus.
		His son Jacques Cassini, 1677-1756, took over the observatory after 1700 and continued the mapping of the Paris meridian, adding to it a measurement of the perpendicular to the arc in 1733-34.
	www.encyclopedia.com /printable.aspx?id=1E1:Cassini (286 words)

	Cassini_de_Thury biography
		César-François Cassini de Thury was the son of Jacques Cassini and the grandson of Giovanni Domenico Cassini.
		Cassini's work on measuring the meridian was a minor one compared with his life-long work to survey France and produce an accurate map of the country.
		Cassini was also able to raise money from many of the French provinces which were interested in obtaining the portion of the map relevant to their part of France.
	www-groups.dcs.st-and.ac.uk /history/Biographies/Cassini_de_Thury.html (1509 words)

	Cassini - Wikipedia, the free encyclopedia
		Jacques Cassini (1677-1756), French astronomer and son of Giovanni Domenico
		Igor Cassini (1915-2002), American gossip columnist, also known as "Cholly Knickerbocker"
		This is a disambiguation page: a list of articles associated with the same title.
	en.wikipedia.org /wiki/Cassini (101 words)

	Cassini_Jacques (Site not responding. Last check: 2007-10-16)
		In 1700 Cassini's father undertook a project to measure the meridian from Paris to Perpignan, which is 13 km west of the Mediterranean coast.
		Cassini assisted his father on this project and they obtained results which wrongly suggested that the Earth was elongated at the poles.
		Cassini de Thury in his project to produce an accurate map of France.
	www.educ.fc.ul.pt /icm/icm2003/icm14/Cassini_Jacques.htm (1398 words)

	CASSINI,G.M.
		Cassini, a native of the County of Nice, is one of the greatest astronomers of his time, and the creator of French astronomy, " the one who picked up the torch of Astrophysics, fallen off Galileo's hands" (Andre Danjon).
		The same year he married Genevieve de Laistre, daughter of the Count de Clermont's lieutenant-general, who was a King's adviser, and bought the castle of Thury, near Beauvais, which became his family residence and whose area was crossed- amazingly!- by the Paris meridian.
		As soon as Cassini arrived at the Observatory, he began a series of observations of the lunar surface which was to lead to the realization of an Atlas (1678), a large Map(1692), and to a theory of the libration and three laws of the Moon rotation, that bear his name.
	www.maphist.com /artman/publish/printer_111.shtml (729 words)

	The Galileo Project
		Cassini was the son of Jean Dominique Cassini and Genevieve de Laistre.
		In astronomy Cassini's primary interests were the study of planets and their satellites, the observation and theory of comets, and the tides.
		Cassini fought continually to defend the work of his father and to reconcile the facts of observation with the theory of vortices.
	galileo.rice.edu /Catalog/NewFiles/cassini_jac.html (556 words)

	D/1766 G1 (Helfenzrieder) (Site not responding. Last check: 2007-10-16)
		On April 11, Cassini de Thury said the light of the moon effected the appearance of the tail.
		Cassini de Thury said clouds covered the region near the horizon during the first few days following April 12, and, thereafter, the comet was poorly placed for observations.
		De la Nux continued to observe the comet on the mornings of May 1 to May 9, only missing the 4th.
	www.maa.agleia.de /Comet/Periodic/helfenzrieder.html (723 words)

	Cassini_Dominique (print-only)
		Dominique Cassini was the son of César-François Cassini de Thury, the grandson of Jacques Cassini and the great-grandson of Giovanni Domenico Cassini.
		In 1771 Cassini's father, Cassini de Thury, was made Director of the Paris Observatory by the King with the conditions that succession would be preserved for the Cassini family.
		Although Cassini de Thury had surveyed almost exactly this in 1740, it was the invention of the Borda repeating circle which made the Academy confident that a new much more accurate measurement could be achieved.
	www-history.mcs.st-and.ac.uk /Printonly/Cassini_Dominique.html (1763 words)

	Site creteil-lac
		Jean-Dominique Cassini was born to Perinaldo, in the county of Nice, from it 1625 and death in Paris in 1712.
		His son, Jacques Cassini, was born in Paris in 1677 and death to Thury, in him(it,her) Beauvaisis, in 1756.
		Dominique, count of Cassini, and son(thread) of the precedent, was born in Paris in 1748 And death to Thury-sous-Clermont, in the Oise, in 1845.
	teissedre.free.fr /creteil-lac/Gb/cassini-GB.htm (427 words)

	History of the Cassini and Maraldi families
		Jean Dominique’s grandson, César François Cassini, was born in the family summer chateâu at Thury-sous-Clermont, Oise on the 17th June 1714.
		César François’ younger brother, Dominique Joseph Cassini, was born on the 27th November 1715 and pursued an extremely interesting career, beginning in the military where he became a King’s Musketeer and Marshall of the King’s camps in Flanders and, at one time, Captain of the Royal Hunt of the Prince de Condé.
		The King and Madame de Pompadour joined the association of fifty people funding the project, and they were joined by some of the provinces of France who wished to have their areas mapped.
	www.catnaps.org /cassini/cass3.html (1016 words)

	Cassini_de_Thury (print-only)
		Maupertuis was one of the leading proponents of the theory that the Earth is flattened at the poles and the argument divided the Académie des Sciences into two rival groups.
		César-François Cassini, although only nineteen years old at the time, addressed the Académie des Sciences in 1733 on the importance of the geodesic measurements he was carrying out with his father.
		Cassini then approached the Académie des Sciences to help support his project to map France and to help him organise private funding for the project.
	www-groups.dcs.st-and.ac.uk /history/Printonly/Cassini_de_Thury.html (1520 words)

	Cassini (Site not responding. Last check: 2007-10-16)
		Although the Cassini projection has been largely replaced by the Transverse Mercator, it is still in limited use outside the United States and was one of the major topographic mapping projections until the early 20th Century.
		C.F. Cassini was the grandson of Jean Dominque Cassini, the famous Italian-born astronomer who changed his name from Giovanni Domenico after being hired in 1669 for astronomical research in Paris.
		J.D. Cassini began the survey of France and C.F. Cassini was the third of four generations involved in this project, the first detailed survey of a nation.
	exchange.manifold.net /manifold/manuals/5_userman/mfd50Cassini.htm (181 words)

	Pirages - Item 362
		Five generations of scientists of the Cassini family served the muse Urania gallantly, beginning with Giovanni-Domenico Cassini, a leading astronomer of the 17th century who migrated from Italy to France to organize the royal observatory for Louis XIV.
		Thereafter, the Cassini family members made their home in France, and in the third generation, Cassini de Thury (1714-84) dedicated his energies to a geometric description of France, using triangulation to reckon distances for manifold points in France from the meridian that passed through Paris.
		This volume details his methods and calculations, and it uses the measurements to prove that Newton’s conception of the globe as flattened at the poles was correct, a view which Cassini’s own father had opposed, preferring the Cartesian model of a globe elongated at the poles.
	192.216.111.186 /db_ST9041.html (301 words)

	Cassini Projection -- 3DSoftware.com (Site not responding. Last check: 2007-10-16)
		Devised by C. Cassini de Thury in 1745 for the survey of France.
		Cassini de Thury was the third of four generations involved in this project, the first detailed survey of a nation.
		Instead of having the straight meridians and parallels of the Equidistant Cylindrical, the Cassini has complex curves for each, except for the Equator, the central meridian, and each meridian 90° away from the central meridian, all of which are straight.
	www.3dsoftware.com /Cartography/USGS/MapProjections/Cylindrical/Cassini (1019 words)

	AllRefer.com - Cassini (Astronomy, Biography) - Encyclopedia
		Gian Domenico Cassini, 1625–1712, was born in Italy and distinguished himself while at Bologna by his studies of the sun and planets, particularly Jupiter; he determined rotational periods for Jupiter, Mars, and Venus.
		His son Jacques Cassini, 1677–1756, took over the observatory after 1700 and continued the mapping of the Paris meridian, adding to it a measurement of the perpendicular to the arc in 1733–34.
		The triumph of the opposing Newtonian hypothesis of the flattening of the earth caused him to retire in 1740, and he was replaced by his son, Cesar-FranCois Cassini de Thury, 1714–84, who continued his father's geodesic work and planned the first modern map of France.
	reference.allrefer.com /encyclopedia/C/Cassini.html (381 words)

	Wikipedia: Paris Observatory
		The Paris Observatory (in French, Observatoire de Paris) is the national astronomical observatory of France, directed by the Académie des Sciences.
		Its foundation lies in the ambitions of Jean-Baptiste Colbert to extend France's maritime power and international trade in the 17th Century.
		The world's first national almanac, the Connaissance des temps was published by the observatory in 1679, using eclipses in Jupiter's satellites to aid sea-fairers in establishing longitude.
	www.factbook.org /wikipedia/en/p/pa/paris_observatory.html (196 words)

	The Planet Mars: A History of Observation and Discovery. Chapter 3: "A Situation Similar to Ours". University of ...
		Jacques (Cassini II) was succeeded by his son, César-François Cassini, who is also known as Cassini de Thury (Cassini III), who in turn was succeeded by his son, Jacques Dominique Cassini (Cassini IV).
		In politics, the family remained strongly royalist in its sympathies, and Cassini IV was finally forced to resign in 1793, during the height of the French Revolution.
		Cassini, in 1672, had observed a fifth-magnitude star (Phi Aquarii) disappear a full six minutes from the disk of Mars, which led him to conclude that the planet must have a very dense atmosphere.
	www.uapress.arizona.edu /onlinebks/mars/chap03.htm (4028 words)

	C&MS: Comet D/1766 G1
		Cassini described the comet as bright, with a tail 3° to 4° long.
		Cassini de Thury saw the comet on the evening of the 9th and noted little change in appearance since the previous evening; however, on the 10th he said the comet had faded and the tail had become less distinct, although he partly attributed this to the nearby moon.
		Cassini de Thury saw it on April 12.82 and noted it was still barely visible to the naked eye.
	www.cometography.com /pcomets/1766g1.html (569 words)

	Dominique, comte de Cassini: biography and encyclopedia article (Site not responding. Last check: 2007-10-16)
		Jacques Dominique, comte de Cassini (June 30, 1748 — October 18, 1845) was a French The Romance language spoken in France and in countries colonized by France
		Count Cassini was born at the Paris Observatory The paris observatory (in french, observatoire de paris or observatoire de paris-meudon) is the foremost astronomical observatory of france, and one of the largest astronomical centers in the world....
		Olympe de Gouges Olympe de gouges (may 7, 1748 - november 3, 1793) (born marie gouze) was a playwright and journalist whose feminist writings reached a large audience....
	www.absoluteastronomy.com /d/dominique_comte_de_cassini (893 words)

	Search Results for measure*
		Cassini had Mechain as his assistant but he took control and made the measurements with the repeating circle while Mechain was given the task of checking the results with older equipment.
		At this time the Academie des Sciences was setting up its project to accurately measure the meridian from Dunkerque to Barcelona in order to obtain an accurate value for the metre which was to be defined as one ten millionth of the distance from the North Pole to the equator.
		De Sitter's work led directly to Eddington's 1919 expedition to measure the gravitational deflection of light rays passing near the Sun, results which, at that time, could only be obtained during an eclipse.
	www-history.mcs.st-and.ac.uk /~history/Search/historysearch.cgi?SUGGESTION=measure*&CONTEXT=1 (15820 words)

	Jean Dominique Cassini (Cassini IV, 1748-1825) (Site not responding. Last check: 2007-10-16)
		Jean Dominique Cassini (Cassini IV) was born in Paris on June 30, 1748 as the son of C.F. Cassini (Cassini III).
		At age 20, he participated in a voyage to study the behavious of chronometers built by Le Roy, on the frigata l'Enjouée (similar to Messier); he published the results in 1770.
		Histoire de l'Astronomie au dix-huitièmme siècle [History of Astronomy in the Eighteenth Century].
	www.seds.org /messier/xtra/Bios/cassini4.html (167 words)

	Richard & Sharon Werner (Site not responding. Last check: 2007-10-16)
		The area around Paris was the first to be surveyed by Cassini.
		French astronomer and geodesist, who continued surveying work undertaken by his father, Jacques Cassini, and began construction of a great topographical map of France in 1744.
		Cassini used a method of triangulation to acheive a high degree of accuracy in his maps.
	home.att.net /~rnwerner/mapreg4.html (415 words)

	Encyclopaedia Britannica entry (Site not responding. Last check: 2007-10-16)
		Although he, his father, and his grandfather had defended the Cartesian view that the Earth is somewhat elongated (with a polar diameter greater than the equatorial diameter), Cassini III abandoned that position in the face of growing evidence that favoured the opposite, so-called Newtonian view that the Earth is flattened at the poles.
		From the 1740s until his death, Cassini de Thury directed work on a general topographic map of France.
		Published in 1789, this Carte gomtrique de la France ("Geometric Map of France"), or Carte de Cassini, was the first map of an entire country drawn up on the basis of extensive triangulation and topographic surveys.
	www.aam314.vzz.net /EB/Cassini_de_Thury.html (175 words)

	Camus (Site not responding. Last check: 2007-10-16)
		It was the beginning of a long association of Camus with the Académie des Sciences for he served the academy as an administrator for forty years and also took an active scientific role in many of the academy's projects.
		Bouguer, Pingré and Cassini de Thury, Camus was involved in another Académie des Sciences project relating to further work on the measurement of the earth.
		The Académie des Sciences was not the only academy which Camus was elected to, and which he served in an administrative capacity.
	www.educ.fc.ul.pt /icm/icm2003/icm14/Camus.htm (753 words)

	Jacques Cassini: biography and encyclopedia article (Site not responding. Last check: 2007-10-16)
		Jacques Cassini (February 8, 1677 - April 18, 1756) was a French The Romance language spoken in France and in countries colonized by France
		Cassini was born at the Paris Observatory The paris observatory (in french, observatoire de paris or observatoire de paris-meudon) is the foremost astronomical observatory of france, and one of the largest astronomical centers in the world....
		César-François Cassini de Thury César-françois cassini de thury (june 17, 1714 september 4, 1784) was a french astronomer, son of jacques cassini....
	www.absoluteastronomy.com /j/jacques_cassini (521 words)

	Cassini on Encyclopedia.com (Site not responding. Last check: 2007-10-16)
		Cassini Radio Signals Decipher Structure of Saturn's Rings.
		Cassini's career -- straight out of a Hemingway novel.
		Saturn bound: Cassini, on its way to Saturn, will come close to Earth in 1999 - and that has some people worried.(plutonium in space probe's batteries raises controversy)
	www.encyclopedia.com /html/C/Cassini.asp (425 words)

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