
	Where results make sense

Topic: Callippus

In the News (Fri 29 Aug 08)

Gordon Brown

Derby County

Mike Huckabee

Lute Olson

Pearl Harbor

Sonia Gandhi

Ricky Hatton

Narendra Modi

Jesus Christ

Rudy Giuliani

	Dictionary of Greek and Roman Biography and Mythology, page 574 (v. 1)
		Of Athens, was a disciple of Plato, and thus became acquainted with Dion of Syracuse, who was likewise among the pupils of Plato.
		The garrison was expelled, and the citizens of Rhegium were restored to autonomy, and Callippus himself remained at Rhegium.
		He treated his mercenaries badly, and being unable to satisfy their demands, he was murdered by his own friends, Leptines and Polyperchon, with the same sword, it is said, with which he had assassinated Dion.
	www.ancientlibrary.com /smith-bio/0583.html (1005 words)

	Callippus biography
		The dates given for the birth and death of Callippus of Cyzicus are guesses but he is known to have been working with Aristotle in Athens starting in 330 BC.
		Callippus of Cyzicus, having studied with Polemarchus, Eudoxus' pupil, following him to Athens dwelt with Aristotle, correcting and completing, with Aristotle's help, the discoveries of Eudoxus.
		Callippus made accurate determinations of the lengths of the seasons and constructed a 76 year cycle comprising 940 months to harmonise the solar and lunar years which was adopted in 330 BC and used by all later astronomers.
	www-history.mcs.st-andrews.ac.uk /Biographies/Callippus.html (666 words)

	A Brief History of Time
		Callippus supported Eudoxus' theory that the sun and moon's velocities were constant, but his additional two spheres made solar calculations more accurate, albeit more complex, than under Eudoxus' model (Samuel 1972: 32).
		Plato's astronomy, in short, was somewhat similar to that of Eudoxus and Callippus, in as much that it depicted the various bodies of the universe as layers of a comprehensive whole.
		Its most fundamental difference from Eudoxus and Callippus' cosmologies was that the latter treated the layers as spheres, but Plato considered them "whorls," hollow hemispheres, neatly stacked, one on top of the other.
	www.perseus.tufts.edu /GreekScience/Students/Chris/TIME2.html (3290 words)

	Anti Essays : : Aristotle\'s Astronomy
		Aristotle, like Eudoxus and Callippus before him, believed that each planet followed the path laid out by a certain number of spheres.
		Callippus had postulated 33 spheres in all, 4 each for Saturn and Jupiter, 5 each for Mars, Venus, Mercury, the sun and the moon.
		The problem with this model, however, was that, according to Aristotle, it did not explain how the motion of the outer spheres was to be prevented from interfering with the motion of the inner spheres.
	www.antiessays.com /print.php?eid=2257 (990 words)

	TMTh:: CALLIPPUS OF CYZICUS
		One of the craters on the moon has been named "Callippus" in his honour.
		Callippus developed and perfected the system of concentric spheres proposed by Eudoxus, adding seven more spheres - one for each of the planets (Mercury, Venus, Mars, Jupiter and Saturn) and one each for the sun and the moon, both then considered planets - for a total of 34.
		He made detailed observations of the rising and setting of the fixed stars, especially the "dawn-risers" and "evening-setters".
	www.tmth.edu.gr /en/aet/2/22.html (199 words)

	lunar cycles
		This golden number is completely unrelated to the golden number which arises from division in extreme and mean ratio, about 1.618...
		The Callipic cycle of 76 years, or 940 lunations, or 27,759 days, or in other words 4 Metonic cycles, was introduced by the Greek astronomer Callippus of Cyzicus (about 370 bce-300 bce), a friend of Aristotle’s, in about 334 bce.
		Callippus had determined experimentally a more precise value for the length of the tropical year.
	www.sizes.com /time/lunar_cycles.htm (654 words)

	Callippus Summary
		Later astronomers used the 940-month calendar of Callippus, who accounted for the inequality of the seasons by developing a model in which the Sun had a variable velocity at different times of the year.
		Callippus at the MacTutor History of Mathematics archive.
		Callippus of Cyzicus from Science and Its Times.
	www.bookrags.com /Callippus (956 words)

	Physikalisch-Technische Bundesanstalt (PTB)
		According to tradition, Easter is celebrated on the first Sunday after the first full moon in spring (northern hemisphere).
		The determination of the date of Easter is based on the cyclic nature of the motion of moon and earth (76 years = 940 moon-months = 27759 days, the so-called Callippic Cycle named after Callippus of Cyzicus, about 330 B.C.).
		The Easter date is not based on present observations of the ephemerides of moon and earth.
	www.ptb.de /en/org/4/44/441/oste_e.htm (383 words)

	Callippus * People, Places, & Things * Greek Mythology: From the Iliad to the Fall of the Last Tyrant
		Callippus * People, Places, and Things * Greek Mythology: From the Iliad to the Fall of the Last Tyrant
		Cut and paste the following text for use in a paper or electronic document report.
		"People, Places and Things: Callippus", Greek Mythology: From the Iliad to the Fall of the Last Tyrant.
	www.messagenet.com /myths/ppt/Callippus_1.html (213 words)

	The Internet Classics Archive \| Against Callippus by Demosthenes
		Please direct any inquiries about the texts themselves to the Perseus Project
		Commentary: No comments have been posted about Against Callippus.
		Recommend a Web site you feel is appropriate to this work,
	classics.mit.edu /Demosthenes/dem.52.html (51 words)

Try your search on: Qwika (all wikis)