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Eudoxus, son of Aeschines, was born and died in Cnidus (also transliterated Knidos), a city on the southwest coast of Anatolia. [3] The years of Eudoxus' birth and death are not fully known but Diogenes Laërtius gave several biographical details, mentioned that Apollodorus said he reached his acme in the 103rd Olympiad (368– 365 BC), and claimed he died in his 53rd year.
The cosmological model of concentric (or homocentric) spheres, developed by Eudoxus, Callippus, and Aristotle, employed celestial spheres all centered on the Earth. [1] [2] In this respect, it differed from the epicyclic and eccentric models with multiple centers, which were used by Ptolemy and other mathematical astronomers until the time of Copernicus.
The celestial spheres, or celestial orbs, were the fundamental entities of the cosmological models developed by Plato, Eudoxus, Aristotle, Ptolemy, Copernicus, and others. In these celestial models, the apparent motions of the fixed stars and planets are accounted for by treating them as embedded in rotating spheres made of an aetherial ...
Levogyre can refer to: . In chemistry and physics, a synonym of levorotation,; In astronomy, the Levogyre is the long since discredited structure of the Universe proposed by ancient Greek astronomer Eudoxus of Cnidus: A series of nested crystalline spheres which contains fixed stars and moving planets which rotate around an immovable Earth with each sphere connected a randomly distributed ...
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11. A memory phone can store photos with names and contact information. 12. Puzzles and activity books stimulate the brain and promote cognitive sharpness.. 13. Card games and board games ...
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A puzzle ball on display at the Overseas Museum, Bremen. A Chinese puzzle ball, sometimes known as a devil's work ball (Chinese: 鬼工球; pinyin: guǐ gōng qiú) or the Concentric Ball (Chinese: 同心球; pinyin: tóng xīn qiú), is a Chinese-made artifact that consists of a number of intricately carved concentric hollow spheres carved from a single solid block that fit within one another ...