Conon Of Samos

Conon Of Samos

▪ Greek mathematician

flourished c. 245 BC, , Alexandria

      mathematician and astronomer whose work on conic sections (curves of the intersections of a right circular cone with a plane) served as the basis for the fourth book of the Conics of Apollonius of Perga (c. 262–190 BC).

      From his observations in Italy and Sicily, Conon compiled the parapegma, a calendar of meteorological forecasts and of the risings and settings of the stars. He settled in Alexandria, where he served as court astronomer to Ptolemy III Euergetes I (reigned 246–221). When Berenice II, the consort of Ptolemy III, dedicated her hair as an offering in a temple of Aphrodite and the offering disappeared, Conon claimed he could see where it had been placed among the stars in the region of the constellations Boötes, Leo, and Virgo. He named this constellation Coma Berenices (“Berenice's Hair”), thus immortalizing Berenice and further securing his court position.

      Conon became a lifelong friend of Archimedes while the latter was studying in Alexandria and later sent him many of his mathematical findings. According to Pappus of Alexandria (fl. c. AD 320), Conon discovered the Spiral of Archimedes, a curve that Archimedes used extensively in some of his mathematical investigations.

      Conon's works included De astrologia (“On Astronomy”), in seven books, which contain the Chaldean observations of solar eclipses, and Pros Thrasydaion (“In Reply to Thrasydaeus”), concerning the intersection points of conics with other conics and with circles. None of his works survives.

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Universalium. 2010.

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  • Conon de Samos — (ca. 280 a. C. ca. 220 a. C.) fue un astrónomo y matemático griego. Se le conoce principalmente por haber dado nombre a la constelación Coma Berenices. Vida y obra Conon nació en la isla de Samos, en Jonia, y posiblemente… …   Wikipedia Español

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  • Conon of Samos — (fl. 245 bc) Greek mathematician and astronomer Conon settled in Alexandria and was employed as court astronomer to the Egyptian monarch Ptolemy III. None of Conon s own writings survive and what is known of his work is through secondhand… …   Scientists

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  • Conon (homonymie) — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Conon est un nom d origine grecque qui peut désigner : Conon, stratège athénien (Ve IVe siècle av. J.‑C.). Conon de Samos, astronome et un… …   Wikipédia en Français

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