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Claude Mydorge
Claude Mydorge (1585 – July 1647) was a French mathematician. His primary contributions were in geometry and physics. Mydorge served on a scientific committee (whose members included Pierre Hérigone and Étienne Pascal) set up to determine whether Jean-Baptiste Morin's scheme for determining longitude Longitude (, ) is a geographic coordinate that specifies the east– west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek lette ... from the Moon's motion was practical. Works * * External links * 1585 births 1647 deaths 17th-century French mathematicians {{France-mathematician-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History One of the earliest known mathematicians were Thales of Miletus (c. 624–c.546 BC); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales' Theorem. The number of known mathematicians grew when Pythagoras of Samos (c. 582–c. 507 BC) established the Pythagorean School, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathematics for its own sake begins. The first woman mathematician recorded by history was Hypati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geometry
Geometry (; ) is, with arithmetic, one of the oldest branches of mathematics. It is concerned with properties of space such as the distance, shape, size, and relative position of figures. A mathematician who works in the field of geometry is called a ''geometer''. Until the 19th century, geometry was almost exclusively devoted to Euclidean geometry, which includes the notions of point, line, plane, distance, angle, surface, and curve, as fundamental concepts. During the 19th century several discoveries enlarged dramatically the scope of geometry. One of the oldest such discoveries is Carl Friedrich Gauss' ("remarkable theorem") that asserts roughly that the Gaussian curvature of a surface is independent from any specific embedding in a Euclidean space. This implies that surfaces can be studied ''intrinsically'', that is, as stand-alone spaces, and has been expanded into the theory of manifolds and Riemannian geometry. Later in the 19th century, it appeared that geometries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physics
Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." Physics is one of the most fundamental scientific disciplines, with its main goal being to understand how the universe behaves. "Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre Hérigone
Pierre Hérigone (Latinized as Petrus Herigonius) (1580–1643) was a French mathematician and astronomer. Of Basque origin, Hérigone taught in Paris for most of his life. Works Only one work by Hérigone is known to exist: ''Cursus mathematicus, nova, brevi, et clara methodo demonstratus, per notas reales et universales, citra usum cujuscunque idiomatis intellectu faciles'' (published in Paris in six volumes from 1634 to 1637; second edition 1644), a compendium of elementary mathematics written in French and Latin. The work introduced a system of mathematical and logical notation. It has been said that "Hérigone introduced so many new symbols in this six-volume work that some suggest that the introduction of these symbols, rather than an effective mathematics text, was his goal." Florian Cajori has written that the work contains "a full recognition of the importance of notation and an almost reckless eagerness to introduce an exhaustive set of symbols..." Hérigone may have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Étienne Pascal
Étienne Pascal (; 2 May 1588 – 24 September 1651) was a French chief tax officer and the father of Blaise Pascal. Biography Pascal was born in Clermont-Ferrand, Clermont to Martin Pascal, the treasurer of France, and Marguerite Pascal de Mons. He had three daughters, two of whom survived past childhood: Gilberte (1620–?) and Jacqueline Pascal, Jacqueline (1625–1661). His wife Antoinette Begon died in 1626. He was a tax official, lawyer, and a wealthy member of the ''Nobles of the Robe, petite noblesse'', who also had an interest in science and mathematics. He was trained in the law at Paris and received his law degree in 1610. That year, he returned to Clermont and purchased the post of counsellor for Bas-Auvergne, the area surrounding Clermont. In 1631, five years after his wife's death, Pascal moved with his children to Paris. They hired Louise Delfault, a maid who eventually became an instrumental member of the family. Pascal, who never remarried, decided to home-e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Baptiste Morin (mathematician)
Jean-Baptiste Morin (February 23, 1583 – November 6, 1656), also known by the Latinized name as Morinus, was a French mathematician, astrologer, and astronomer. Life and work Born in Villefranche-sur-Saône, in the Beaujolais, he began studying philosophy at Aix-en-Provence at the age of 16. He studied medicine at Avignon in 1611 and received his medical degree two years later. He was employed by the Bishop of Boulogne from 1613 to 1621 and was sent to Germany and Hungary during this time. He served the bishop as an astrologer and also visited mines and studied metals. He subsequently worked for the Duke of Luxembourg until 1629. Morin published a defense of Aristotle in 1624. He also worked in the field of optics, and continued to study in astrology. He worked with Pierre Gassendi on observational astronomy. In 1630, Morin was appointed professor of mathematics at the Collège Royal, a post he held until his death. A firm believer of the idea that the Earth r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Longitude
Longitude (, ) is a geographic coordinate that specifies the east–west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek letter lambda (λ). Meridians are semicircular lines running from pole to pole that connect points with the same longitude. The prime meridian defines 0° longitude; by convention the International Reference Meridian for the Earth passes near the Royal Observatory in Greenwich, England on the island of Great Britain. Positive longitudes are east of the prime meridian, and negative ones are west. Because of the Earth's rotation, there is a close connection between longitude and time measurement. Scientifically precise local time varies with longitude: a difference of 15° longitude corresponds to a one-hour difference in local time, due to the differing position in relation to the Sun. Comparing local time to an absolute measure of time allows ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1585 Births
Events January–June * January – The Netherlands adopts the Gregorian calendar. * February – The Spanish seize Brussels. * April 24 – Pope Sixtus V succeeds Pope Gregory XIII, as the 227th pope. * May 19 – Spain seizes English ships in Spanish ports, precipitating the Anglo-Spanish War (1585–1604). * June 11 – The magnitude 9.3 1585 Aleutian Islands earthquake unleashes a tsunami in the Pacific Ocean, killing many people in Hawaii and reportedly striking Japan. July–December * July 7 – The Treaty of Nemours forces King Henry III of France to capitulate to the demands of the Catholic League, triggering the Eighth War of Religion (also known as the War of the Three Henrys) in France. * August 8 – English explorer John Davis enters Cumberland Sound in Baffin Island, in his quest for the Northwest Passage. * August 14 – Queen Elizabeth I of England agrees to establish a protectorate over the Netherlands. * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1647 Deaths
Events January–March * January 2 – Chinese bandit leader Zhang Xianzhong, who has ruled the Sichuan province since 1644, is killed at Xichong by a Qing archer after having been betrayed one of his officers, Liu Jinzhong. * January 7 – The Westminster Assembly begins debating the biblical proof texts, to support the new Confession of Faith. * January 16 – Citizens of Dublin declare their support for Rinuccini, and refuse to support the army of the Marquis of Ormond. * January 17 – Posten Norge was founded as Postvesenet. * January 20 – A small Qing force led by Li Chengdong captures Guangzhou and kills the Zhu Yuyue, the Shaowu Emperor of the Southern Ming dynasty in China. * February 5 – The Yongli era is proclaimed as Zhu Youlang is declared the Yongli Emperor of the Southern Ming. * February 24 – Thomas Bushell surrenders the Bristol Channel island of Lundy, the last remaining Royalist territory of England, to the Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
