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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 (mathematician), Jean-Baptiste Morin's scheme for determining longitude from the Moon's motion was practical. Works * * External links

* 1585 births 1647 deaths 17th-century French mathematicians {{France-mathematician-stub ...
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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, mathematical structure, structure, space, Mathematical model, models, and mathematics#Calculus and analysis, change. History One of the earliest known mathematicians was Thales of Miletus (); 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's theorem. The number of known mathematicians grew when Pythagoras of Samos () 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 math ...
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Geometry
Geometry (; ) is a branch of mathematics concerned with properties of space such as the distance, shape, size, and relative position of figures. Geometry is, along with arithmetic, one of the oldest branches of mathematics. A mathematician who works in the field of geometry is called a ''List of geometers, geometer''. Until the 19th century, geometry was almost exclusively devoted to Euclidean geometry, which includes the notions of point (geometry), point, line (geometry), line, plane (geometry), plane, distance, angle, surface (mathematics), surface, and curve, as fundamental concepts. Originally developed to model the physical world, geometry has applications in almost all sciences, and also in art, architecture, and other activities that are related to graphics. Geometry also has applications in areas of mathematics that are apparently unrelated. For example, methods of algebraic geometry are fundamental in Wiles's proof of Fermat's Last Theorem, Wiles's proof of Fermat's ...
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Physics
Physics is the scientific study of matter, its Elementary particle, 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." It is one of the most fundamental scientific disciplines. "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 physics. (...) You will come to see physics as a towering achievement of ...
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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 ...
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Étienne Pascal
Étienne Pascal (; 2 May 1588 – 24 September 1651) was a French chief tax officer and the father of Blaise Pascal (1623–1662). Biography Pascal was born in Clermont to Martin Pascal, the treasurer of France, and Marguerite Pascal de Mons. He had three daughters, two of whom survived past childhood: Gilberte (1620–1687) and Jacqueline (1625–1661). His wife Antoinette Begon died in 1626. He was a tax official, lawyer, and a wealthy member of the '' 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-educate his children, who showed extr ...
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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 Lyonnais, 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 remained ...
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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 imaginary 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, south-east London 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 absol ...
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1585 Births
Events January–March * January 21 – Robert Nutter, Thomas Worthington, and 18 other Roman Catholic priests are "perpetually banished" from England by order of Queen Elizabeth, placed on the ship ''Mary Martin of Colchester'', and transported to France. * February 16 – Pachomius II is deposed by fellow bishops from his position as Ecumenical Patriarch of Constantinople, head of the Eastern Orthodox Church, and replaced by the Metropolitan of Philippoupolis, Theoleptus II. * February 21 – King Johan III of Sweden, widowed since 1583, marries Gunilla Bielke in a ceremony at VästerÃ¥s, which the King's siblings refuse to attend. The coronation of Queen consort Gunilla takes place the next day. Over the next seven years, she works on changing the Catholic government's attitude towards Protestants. * March 10 – The Spanish Army, commanded by Alexander Farnese, Duke of Parma, obtains the surrender of Brussels after a siege that began the ye ...
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1647 Deaths
Events January–March * January 2 – Chinese bandit leader Zhang Xianzhong, who has ruled the Sichuan province since 1644, is killed at Xichong County, Xichong by a Qing archer, after having been betrayed by one of his officers, Liu Jinzhong. * January 7 – The Westminster Assembly begins debating the biblical proof texts, to support the new Westminster Confession of Faith, Confession of Faith. * January 16 – Citizens of Dublin declare their support for Giovanni Battista Rinuccini, Rinuccini, and refuse to support the army of the Marquis of Ormond. * January 17 – Posten Norge is founded as Postvesenet. * January 20 – A small Qing force led by Li Chengdong captures Guangzhou and kills the Zhu Yuyue, the List of emperors of the Ming dynasty, Shaowu Emperor of the Southern Ming dynasty in China. * February 5 – The Zhu Youlang, Yongli Chinese era name, era is proclaimed as Zhu Youlang is declared the Yongli Emperor of the Southern Ming ...
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