equant
31Copernicus, Nicolaus — Polish Mikołaj Kopernik born Feb. 19, 1473, Toruń, Pol. died May 24, 1543, Frauenburg, East Prussia Polish astronomer. He was educated at Kraków, Bologna, and Padua, where he mastered all the knowledge of the day in mathematics, astronomy,… …
32France Télécom — France Telecom S.A. Type Société Anonyme Traded as Euronext:  …
33Astrophysics — is the branch of astronomy that deals with the physics of the universe, including the physical properties (luminosity, density, temperature, and chemical composition) of celestial objects such as stars, galaxies, and the interstellar medium, as… …
34Celestial spheres — Not to be confused with celestial sphere. For other uses, see Celestial (disambiguation). Geocentric celestial spheres; Peter Apian s Cosmographia (Antwerp, 1539) …
35Ibn al-Shatir — Ala Al Din Abu l Hasan Ali Ibn Ibrahim Ibn al Shatir (1304 ndash; 1375) ( ar. ابن الشاطر) was an Arab Muslim astronomer, mathematician, engineer and inventor who worked as muwaqqit (موقت, religious timekeeper) at the Umayyad Mosque in Damascus,… …
36Timeline of astronomy — Timeline of astronomy2500 BCMany ancient sites are thought to have astronomical significance, such as the Ancient Egyptian pyramids, Harappan shell instruments, British megaliths, and buildings in China and Latin America.In Lothal, the ancient… …
37Astronomy in medieval Islam — An 18th century Persian Astrolabe, kept at The Whipple Museum of the History of Science in Cambridge, England. Islamic astronomy or Arabic astronomy comprises the astronomical developments made in the Islamic world, particularly during the… …
38Tusi-couple — The Tusi couple is a mathematical device in which a small circle rotates inside a larger circle twice the radius of the smaller circle. Rotations of the circles cause a point on the circumference of the smaller circle to oscillate back and forth… …
39Orange (Telekommunikation) — Orange S.A. Unternehmensform Aktiengesellschaft Unternehmenssitz Paris, Frankreich …
40Orange (Unternehmen) — Orange S. A. Rechtsform Aktiengesellschaft ISIN FR0000079196 Sitz Pa …
