Eratosthenes of Cyrene — born с 276 BC, Cyrene, Libya died с 194, Alexandria, Egypt Greek scientific writer, astronomer, and poet. He settled in Alexandria с 255 BC and became director of its great library. He is the first person known to have calculated the Earth s… … Universalium
Eratosthenes of Cyrene — (c. 276 bc–194 bc) Greek astronomer Eratosthenes was born in Cyrene, now in Libya, and educated at Athens. He then taught in Alexandria where he became tutor to the son of Ptolemy III and librarian. He was prominent in history, poetry,… … Scientists
Eratosthenes — of Cyrene (Greek polytonic|Ἐρατοσθένης; 276 BC 194 BC) was a Greek mathematician, poet, athlete, geographer and astronomer. He made several discoveries and inventions including a system of latitude and longitude. He was the first person to… … Wikipedia
Eratosthenes — von Kyrene (griechisch Έρατοσθένης ὁ Κυρηναῖος; * zwischen 276 und 273 v. Chr. in Kyrene; † um 194 v. Chr. in Alexandria) war ein außergewöhnlich vielseitiger griechischer Gelehrter in der Blütezeit der hellenistischen… … Deutsch Wikipedia
Eratosthenes, sieve of — ▪ mathematics systematic procedure for finding prime numbers (prime) that begins by arranging all of the natural numbers (1, 2, 3, …) in numerical order. After striking out the number 1, simply strike out every second number following the… … Universalium
Cyrene — • A titular see of Northern Africa Catholic Encyclopedia. Kevin Knight. 2006. Cyrene Cyrene † … Catholic encyclopedia
Eratosthenes — Eratosthenes, geb. 276 zu Cyrene, universeller Gelehrter, vorzüglich um die Geographie, Mathematik, Astronomie u. Chronologie verdient, st. 194 v. Chr. den Hungertod, weil ihm allmälige Erblindung das Leben verleidete. Vollständige Ausgabe des… … Herders Conversations-Lexikon
Cyrene — nach Plinius 11 röm. Meilen, nach Strabo 80 Stadien vom Mittelmeere entfernt, durch Dorer gegründet (seine Ruinen u. Felsengräber findet man bei Grenne im heutigen Barka in der Berberei), wurde nach Karthago die zweite Stadt Nordafrikas, bildete… … Herders Conversations-Lexikon
Cyrene — /suy ree nee/, n. an ancient Greek city and colony in N Africa, in Cyrenaica. * * * Ancient city, North Africa. Located in modern day Libya, it was founded с 630 BC by a group of emigrants from the Aegean island of Thíra. Their leader, Battus,… … Universalium
Cyrene, Libya — Archaeological Site of Cyrene * UNESCO World Heritage Site Country Libya … Wikipedia
