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Topic: 276 BC

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	Kids.net.au - Encyclopedia Eratosthenes -
		Eratosthenes (276 BC - 194 BC) was a Greek mathematician, geographer and astronomer with (probably) Chaldean origins.
		In 236 BC he was appointed by Ptolemy III Evergetes I as a head and the third librarian of the Alexandrian library.
		He believed the Earth was a sphere and circa 240 BC he calculated its diameter, using trigonometry and information on the angle of the Sun at noon in Alexandria and Syene[?] (now Aswan, Egypt), whose distance from each other was known from caravan travellings to be 5,000 stadia.
	www.kids.net.au /encyclopedia-wiki/er/Eratosthenes (482 words)

	Learn more about 3rd century BC in the online encyclopedia. (Site not responding. Last check: 2007-11-06)
		Learn more about 3rd century BC in the online encyclopedia.
		You are here: Online Encyclopedia > 3rd century BC
		(2nd millennium BC - 1st millennium BC - 1st millennium AD)
	www.onlineencyclopedia.org /3/3r/3rd_century_bc.html (143 words)

	Science: Mathematics: Mathematicians: Eratosthenes of Cyrene - Open Site
		Eratosthenes was born 276 BC in Cyrene, North Africa, which is now Shahhat in Libya.
		He died in 194 BC in Alexandria, Egypt.
		It is he became blind in old age and further that he died as a result of self imposed starvation.
	open-site.org /Science/Mathematics/Mathematicians/Eratosthenes_of_Cyrene (285 words)

	Eratosthenes (Site not responding. Last check: 2007-11-06)
		The crater Eratosthenes on the Moon gives its name to the Lunar Eratosthenian period
		In 236 BC he was appointed by Ptolemy III Euergetes I as a head and the third librarian of the Alexandrian library.
		He calculated the earth's circumference circa 240 BC, using trigonometry and information on the altitude of the Sun at noon in Alexandria and Syene (now Aswan, Egypt).
	www.sciencedaily.com /encyclopedia/eratosthenes (564 words)

	List of astronomers -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-11-06)
		Friedrich Wilhelm August Argelander ((A republic in central Europe; split into East German and West Germany after World War II and reunited in 1990) Germany, 1799 – 1875)
		Giuseppe Asclepi ((A republic in southern Europe on the Italian Peninsula; was the core of the Roman Republic and the Roman Empire between the 4th century BC and the 5th century AD) Italy, 1706 – 1776)
		Franjo Dominko, ((A mountainous republic in central Europe; formerly part of the Habsburg monarchy and Yugoslavia; achieved independence in 1991) Slovenia, 1903 – 1987)
	www.absoluteastronomy.com /encyclopedia/L/Li/List_of_astronomers.htm (6406 words)

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