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Topic: Oenopides

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	Oenopides Summary
		The main accomplishment of Oenopides as an astronomer was his determination of the angle between the plane of the celestial equator, and the zodiac (the yearly path of the sun in the sky).
		Oenopides also determined the value of the Great Year, that is, the shortest interval of time that is equal to both an integer number of years and an integer number of months.
		Oenopides was said to have regarded the universe as a living organism, God or the Divine being its soul.
	www.bookrags.com /Oenopides (1481 words)

	Oenopides biography
		Indeed, if Oenopides did not fix on this or some other figure it is difficult to know in what his achievement consisted, for the Babylonians no less than the Pythagoreans and Egyptians must have realised from early days that the apparent path of the sun was inclined to the celestial equator.
		Later it came to mean the period after which the motions of the sun, moon and planets all repeated themselves so in the period of one Great Year all should have returned to their positions at the beginning of the Great Year.
		[Oenopides] may have been the first to lay down the restriction of the means permissible in constructions t the ruler and compasses which became a canon of Greek geometry for all plane constructions...
	www-gap.dcs.st-and.ac.uk /~history/Biographies/Oenopides.html (844 words)

	Oenopides
		Indeed, if Oenopides did not fix on this or some other figure it is difficult to know in what his achievement consisted, for the Babylonians no less than the Pythagoreans and Egyptians must have realised from early days that the apparent path of the sun was inclined to the celestial equator.
		Paul Tannery [5] showed that Oenopides' result leads to a lunar month of 29.53013 days which is remarkably close to the modern value of 29.53059 days.
		[Oenopides] may have been the first to lay down the restriction of the means permissible in constructions t the ruler and compasses which became a canon of Greek geometry for all plane constructions...
	www.educ.fc.ul.pt /icm/icm2003/icm14/Oenopides.htm (687 words)

	Oenopides (crater)
		Oenopides is a lunar crater that is located near the northwest limb of the Moon, and so appears foreshortened when viewed from the Earth.
		This formation lies due south of the prominent Pythagoras crater, and is attached to the southwest rim of 'Babbage E'.
		The southwest rim of Oenopides is part of the northern edge of Oceanus Procellarum.
	www.ufaqs.com /wiki/en/oe/Oenopides%20%28crater%29.htm (202 words)

	Dictionary of Greek and Roman Biography and Mythology, page 17 (v. 3)
		He is spoken of in connection with Pythagoras and his followers, so that he seems to have been regarded as a Pythagorean.
		Oenopides derived most of his astronomical knowledge from the priests and astronomers of Egypt, with whom he lived for some time.
		He had a notion that the milky-way was the original path of the sun, from which he had been frightened into his present'path by the spectacle of the banquet of Thyestes.
	www.ancientlibrary.com /smith-bio/2351.html (1055 words)

	Chios. Who is Chios? What is Chios? Where is Chios? Definition of Chios. Meaning of Chios.
		Before passing through the possession of the Latin emperors of Constantinople, the Genoese, the Ottoman Turks (there was a massacre of the islanders after a rebellion in 1822) and finally the Greeks after the First Balkan War (1912).
		Khíos claims to be the birthplace of Homer, Hippokrates the mathematician, and Oenopides.
		Oenopion, a legendary king, is said to have brought winemaking to the island.
	www.knowledgerush.com /kr/encyclopedia/Chios (187 words)

	Oenopides
		Based on this Paul Tannery [5] showed that Oenopides' result leads to a lunar month of 29.53013 days which is remarkably close to the modern value of 29.53059 days.
		Paul Tannery in [5] makes another claim however when he states that Oenopides considered some of the planets as well as the sun and moon as part of his 59 year Great Year.
		Oenopides also developed a theory to account for the Nile floods.
	202.38.126.65 /mirror/www-history.mcs.st-and.ac.uk/history/Mathematicians/Oenopides.html (737 words)

	Oenopides (print-only)
		Died: about 420 BC Very little is known about the life of Oenopides of Chios except that his place of birth was the island of Chios.
		Tannery is forced to conclude that not all the planets could have been taken into account by Oenopides, however, as some of the planets would be in the wrong sign of the Zodiac after the period ended.
		These are elementary results but Heath believes that their significance might be that Oenopides set out for the first time the explicit 'ruler and compass' type of allowable construction.
	www-history.mcs.st-and.ac.uk /%7ehistory/Printonly/Oenopides.html (760 words)

	Oenopides de Chios (Site not responding. Last check: )
		Oenopides estudio la eclíptica y encontró un valor de inclinación sobre el Ecuador celeste de 24º el cual fue aceptado en Grecia hasta los estudios mas precisos de Eratóstenes, otros autores sin embargo, no aceptan que Oenopides haya estudiado la eclíptica.
		Otra contribución de Oenopides a la matemática astronómica fue el descubrimiento del periodo del gran año (periodo después del cual los movimientos de la luna y el Sol vuelven a repetirse), Dando un valor de 59 años.
		Este último cálculo, sin embargo, aunque probablemente basado en los 59 años del gran año de Oenopides pudo haber sido realizado posteriormente por otras personas.
	almaak.tripod.com /biografias/oenopides.htm (249 words)

	Oenopides (crater) - Definition, explanation
		Oenopides is a lunar crater that is located near the northwest limb of the Moon, and so appears foreshortened when viewed from the Earth.
		This formation lies due south of the prominent Pythagoras crater, and is attached to the southwest rim of 'Babbage E'.
		The southwest rim of Oenopides is part of the northern edge of Oceanus Procellarum.
	www.calsky.com /lexikon/en/txt/o/oe/oenopides__crater_.php (244 words)

	Oenopides, Griechischer in Chios geborener Mathematiker
		Oenopides ist durch ganz Ägypten gereist und hat beträchtliche Kenntnisse in Astronomie aufgebaut.
		Oenopides berechnete, dass das "Grosse Jahr" 59 Jahre dauerte.
		Auf der Basis dieser Beobachtung berechnete Oenopides den lunaren Monat von 29,53013 Tagen, der bemerkenswert nahe an den modernen Wert von 29,53059 Tagen kommt.
	www.fragrant-chios.com /de/info/people_oenopides.php (196 words)

	Geometry.Net - Scientists: Oenopides Of Chios
		Oenopides accepted a year of 365 days and a month of 291/2 days.
		Extractions: Very little is known about the life of Oenopides of Chios except that his place of birth was the island of Chios.
		Indeed, if Oenopides did not fix on this or some other figure it is difficult to know in what his achievement consisted, for the Babylonians no less than the Pythagoreans and Egyptians must have realised from early days that the apparent path of the sun was inclined to the celestial equator.
	www.geometry.net /scientists/oenopides_of_chios.php (1778 words)

	The Giza Pyramids - Astronomy
		Some scholars accept that Oenopides discovered that the ecliptic was at an angle but doubt that he measured the angle.
		Greek sources attribute the discovery of the ecliptic to Oenopides but whether he learnt of the 12 signs of the zodiac from scholars in Mesopotamia or whether his discoveries were independent Greek discoveries is unknown and a parallel development in both Greece and Babylon should not be excluded.
		For convenience the zero point or origin was taken to be the point at which the north-bound Sun crosses the celestial equator from the austral to boreal hemisphere.
	members.ozemail.com.au /~googong/giza15.html (1512 words)

	Ciencias del Espacio v3.0 - Tu web de Astronomía
		Oenopides estudio la eclíptica y encontró un valor de inclinación sobre el Ecuador celeste de 24º el cual fue aceptado en Grecia hasta los estudios mas precisos de Eratóstenes, otros autores sin embargo, no aceptan que Oenopides haya estudiado la eclíptica.
		Otra contribución de Oenopides a la matemática astronómica fue el descubrimiento del periodo del gran año (periodo después del cual los movimientos de la luna y el Sol vuelven a repetirse), Dando un valor de 59 años.
		Otras pistas sobre la filosofía de Oenopides dice que que el creía que el fuego y el aire son los elementos básicos y pensaba en la tierra como un ser viviente siendo Dios su alma.
	www.cienciasdelespacio.com /index.php?sec=biografias&bio=18 (289 words)

	Egyptian astronomy
		Diodorus Siculus (70 B.C.) reports that Egyptian priests claimed it was from Oenopides of Chios learned the sun moved in an inclined orbit and oppositely to the motion of the other stars.
		In this connection, it should be noted that the priority of Oenopides claim to this discovery is disputed by Pythagoras.
		In view of the fact that both Pythagoras and Oenopides went to Egypt to study astronomy, it would seem only fair to give their Egyptian teachers at least some of the credit.
	www.ancient-wisdom.co.uk /egyptastronomy.htm (825 words)

	Geometry.Net - Scientists: Oenopides Of Chios
		KhÃos claims to be thebirthplace of Homer, Hippokrates the mathematician, and oenopides.
		Oenopides "Of Chios; Greek astronomer, geometrician (500(?)-430 B.C.)." Oersted "Hans Christian; Danish physicist, chemist (1777-1851)." Ohm Georg Simon; Germanphysicist (1787-1854).
		Oenopides ~ of Chios (500?-430 B.C.), Greek astronomer and geometrician; determined the inclination of the ecliptic to be 24Â° and determined the year to have 365-1/5 days.
	www4.geometry.net /detail/scientists/oenopides_of_chios_page_no_3.html (2219 words)

	Oenopides, Greek mathematician born in Chios
		The discoveries Oenopides made were written on a bronze tablet which was offered to Olympia.
		A major contribution said to be made by Oenopides to mathematical astronomy was his discovery of the period of the Great Year.
		Based on this some say that Oenopides's result leads to 29.53013 days for a lunar month, which is very close to the value of 29.53059 days that is used nowadays.
	www.fragrant-chios.com /info/people_oenopides.php (207 words)

	Geometry.Net - Scientists: Oenopides Of Chios
		Oenopides accepted a year of 365 days and a month of 291/2 days.
		Extractions: Very little is known about the life of Oenopides of Chios except that his place of birth was the island of Chios.
		it was probably Oenopides who settled on the value of, which was accepted in Greece until refined by Eratosthenes.
	www.988.com /scientists/oenopides_of_chios.php (1778 words)

	TMTh:: OENOPIDES OF CHIOS
		Cited by Diodorus Siculus and by Proclus in his "Commentary on Euclid", Oenopides travelled widely through Egypt and acquired considerable skill in astronomy.
		His work focused on studies of the lunar and solar years.
		Oenopides accepted a year of 365 days and a month of 291/2 days.
	www.tmth.edu.gr /en/aet/2/73.html (176 words)

	Geometry.Net - Scientists: Oenopides Of Chios
		oenopides of chios probably created the first three of what became Euclid's 'postulates' or About 440 bce, oenopides of chios probably created the first three of what became
		oenopides of chios probably created the first three of what became Euclid s postulates or assumptions.
		Timeline Ancient Greece Mathematics Around 600 BC the Cretan poet Epimenides is attributed to have invented the linguistic paradox with his phrase "Cretans are ever liars" - the Liar's Paradox.
	www4.geometry.net /detail/scientists/oenopides_of_chios.html (2205 words)

	Geometry.Net - Scientists: Oenopides Of Chios
		's Erastae Oenopides is described as (see for example [1]):-...
		it was probably Oenopides who settled on the value of, which was accepted in Greece until refined by
		Diodorus on the Greek Cultural Debt to Egypt (based on Oldfather's tr.) But now that we have examined these matters we must enumerate what Greeks, who have won fame for their wisdom and learning, visited Egypt in ancient times in order to become acquainted with its customs and learning.
	www.988.com /detail/scientists/oenopides_of_chios.html (1909 words)

	On the moon tonight
		As near as I could tell, the terminator was following the 66 degree line illustrated in Rukl.
		Oenopides showed sections of its far rim hovering in the shadow.
		Babage was well illuminated with tantalizing detail shimmering through the atmosphere.
	www.observers.org /reports/98.03.10.2.html (374 words)

	Observing the Sky » Moon: Day 26 - “Spanning the Ocean”
		The terminator has reached the uneven rim of crater Babbage in the north, while juxtaposed Pythagoras (80 mi.) shows more shading from its west side.
		Still, Babbage’s floor is all illuminated, as is nearby Oenopides (69 km), but much smaller Markov (41.3 km) is an oval fl pit.
		The southern cusp is dominated by giant Bailly - white and rough inside, with the northwest section of its rim showing shadowed relief and a crater within still 1/2 illuminated.
	www.observingthesky.org /index.php?p=256 (389 words)

	Hitchhiker's Guide to Rukl Chart 01
		Oenopides showed sections of its far rim hovering in the shadow.
		Rukl's drawing of Markov looks interesting, as though it has concentric rings inside it.
		The Hitchhiker's Guide to the Moon Compilation is © Copyright 1999,2000,2002 Akkana Peck.
	www.shallowsky.com /moon/rukl01.html (72 words)

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