|
Gabriel-Philippe De La Hire
Gabriel-Philippe de La Hire (25 July 1677 – 4 June 1719) was a French scientist, son of the astronomer Philippe de la Hire, who also contributed to astronomy but made some contributions to medicine and other sciences as well. La Hire (or Philipe II) was born to Philippe de La Hire (1640-1718) and Catherine Lesage in Paris. He learned astronomy from his father at the Paris observatory and assisted him in making observations. He became an associate of the Academy of Sciences in 1699. Along with his father the two were accused of plagiarism by Jean Le Fèvre around 1702. La Hire published several papers to the Academy of Sciences from 1703. His 1699 study of the growth of human teeth under a microscope indicate that he observed the so-called Hunter-Schreger bands. In 1706 he was admitted member to the Royal Academy of Architecture and contributed a few works on the subject such as ''L’art de charpenterie'' (1702), on the use of timber in construction. In 1718 he worked with Jacq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Le Fèvre (astronomer)
:''To be distinguished from Jean Le Fèvre, bishop of Chartres 1380-1389, Jean Le Fèvre (canon) and Jean Le Fevre de Saint-Remy 1420-1435'' Jean Le Fèvre (9 April 1652 – 1706, Paris) was a French astronomer and physicist. He was editor of the ''Connaissance des Temps'' and was elected to the French Academy of Sciences The French Academy of Sciences (French: ''Académie des sciences'') is a learned society, founded in 1666 by Louis XIV of France, Louis XIV at the suggestion of Jean-Baptiste Colbert, to encourage and protect the spirit of French Scientific me ... based on this work. References 1652 births 1706 deaths 17th-century French astronomers French physicists Members of the French Academy of Sciences People from Lisieux 18th-century French astronomers {{France-physicist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hunter-Schreger Band
Hunter-Schreger bands, commonly abbreviated as HSB, are features of the enamel of the teeth in mammals, mostly placentals.Line and Bergqvist, 2005, p. 924 In HSB, enamel prisms are arranged in layers of varying thickness at about right angles to each other. HSB strengthen the enamel and prevent cracks from propagating through the tooth.Martin, 1994, p. 121 HSB are first observed in early Paleocene mammals, but at this time the HSB occupy only a small portion of the incisor and the angle between the bands is low. By the late Paleocene, HSB is seen to extend throughout the enamel and the bands are located at nearly right angles to each other. Under oblique reflected light HSB can be seen as dark and light strips of variable width. Among Glires, the group containing rodents, lagomorphs, and their primitive relatives, the absence of HSB from the incisors has been considered primitive.Martin, 2004, p. 411 Some early representatives, including '' Eurymylus'', lack HSB, b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jacques Cassini
Jacques Cassini (18 February 1677 – 16 April 1756) was a French astronomer, son of the famous Italian astronomer Giovanni Domenico Cassini. Cassini was born at the Paris Observatory. Admitted at the age of seventeen to membership of the French Academy of Sciences, he was elected in 1696 a fellow of the Royal Society of London, and became ''maître des comptes'' in 1706. Having succeeded to his father's position at the observatory in 1712, in 1713 he extended the Paris meridian, measuring the arc of the meridian from Dunkirk to Perpignan, and published the results in a volume entitled ''Traité de la grandeur et de la figure de la terre'' (1720). His two separate calculations for a degree of meridian arc were 57,097 ''toises de Paris'' (111.282 km) and 57,061 toises (111.211 km), giving results for Earth's radius of 3,271,420 toises (6,375.998 km) and 3,269,297 toises (6,371.860 km), respectively. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amiens
Amiens (English: or ; ; pcd, Anmien, or ) is a city and commune in northern France, located north of Paris and south-west of Lille. It is the capital of the Somme department in the region of Hauts-de-France. In 2021, the population of Amiens was 135,429. A central landmark of the city is Amiens Cathedral, the largest Gothic cathedral in France. Amiens also has one of the largest university hospitals in France, with a capacity of 1,200 beds. The author Jules Verne lived in Amiens from 1871 until his death in 1905, and served on the city council for 15 years. Incumbent French president Emmanuel Macron was born in Amiens. The town was fought over during both World Wars, suffering significant damage, and was repeatedly occupied by both sides. The 1918 Battle of Amiens was the opening phase of the Hundred Days Offensive which directly led to the Armistice with Germany. The Royal Air Force heavily bombed the town during the Second World War. In the aftermath, the city was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dunkirk
Dunkirk (french: Dunkerque ; vls, label=French Flemish, Duunkerke; nl, Duinkerke(n) ; , ;) is a commune in the department of Nord in northern France.Commune de Dunkerque (59183) INSEE It lies from the border. It has the third-largest French harbour. The population of the commune in 2019 was 86,279. Etymology and language use The name of Dunkirk derives from '' or ' |
1677 Births
Events January–March * January 1 – Jean Racine Jean-Baptiste Racine ( , ) (; 22 December 163921 April 1699) was a French dramatist, one of the three great playwrights of 17th-century France, along with Molière and Corneille as well as an important literary figure in the Western traditio ...'s tragedy ''Phèdre'' is first performed, in Paris. * January 21 – The first medical publication in America (a pamphlet on smallpox) is produced in Boston. * February 15 – Four members of the English House of Lords embarrass King Charles II at the opening of the latest session of the "Cavalier Parliament" by proclaiming that the session is not legitimate because it hadn't met in more than a year. The George Villiers, 2nd Duke of Buckingham, Duke of Buckingham, backed by Anthony Ashley Cooper, 1st Earl of Shaftesbury, Lord Shaftesbury, James Cecil, 3rd Earl of Salisbury, Lord Salisbury and Philip Wharton, 4th Baron Wharton, Baron Wharton, makes an unsuc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
