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Logarithmic spiral ( pitch 10°) A section of the Mandelbrot set following a logarithmic spiral. A logarithmic spiral, equiangular spiral, or growth spiral is a self-similar spiral curve that often appears in nature. The first to describe a logarithmic spiral was Albrecht Dürer (1525) who called it an "eternal line" ("ewige Linie").
Descartes (French pronunciation: ⓘ) is a large village and commune in the Indre-et-Loire department in central France.It is approximately 29 kilometers east of Richelieu and about 48 kilometers east of Loudun, on the banks of the Creuse River, near the border of the French department of Vienne, and the border of the region between Centre-Val de Loire and Nouvelle-Aquitaine.
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Descartes Highlands. Aerial photo of the Descartes Highlands with features and Apollo 16 mission traverses labeled. The Descartes Highlands is an area of lunar highlands located on the near side that served as the landing site of the American Apollo 16 mission in early 1972. The Descartes Highlands is located in the area surrounding Descartes ...
The death of Rene Descartes also became a topic of speculation. One year after Baillet's biography was published, a book written by Pierre-Daniel Huet argued that Descartes's death was entirely faked. He did not believe that Rene Descartes had died and thought that a log had been placed in his coffin instead of his body.
Dioptrique. La dioptrique (in English Dioptrique, Optics, or Dioptrics) is a short treatise by René Descartes. It was published in 1637 included in one of the Essays written with Discourse on the Method. In this essay Descartes uses various models to understand the properties of light. This essay is known as Descartes' greatest contribution to ...
In number theory, a Descartes number is an odd number which would have been an odd perfect number if one of its composite factors were prime.They are named after René Descartes who observed that the number D = 3 2 ⋅7 2 ⋅11 2 ⋅13 2 ⋅22021 = (3⋅1001) 2 ⋅ (22⋅1001 − 1) = 198585576189 would be an odd perfect number if only 22021 were a prime number, since the sum-of-divisors ...
Sesenne. Dame Marie Selipha Descartes, DBE, SLMM, BEM (née Charlery; 28 March 1914 – 11 August 2010), best known as Sesenne, was a Saint Lucian singer and cultural icon. Singing in her native patois language, at a time when authorities barred its use, Sesenne developed a wide following in the rural area in which she grew up.