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Hipparchus

Younger son of Pisistratus of Athens (6th cent. bc). Closely associated with his elder brother Hippias (1), he was known esp. as patron and lover of the arts. He invited Anacreon and ...

Hipparchus

Hipparchus   Quick reference

World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
50 words

... (active 2nd century bc ) Greek astronomer . Hipparchus estimated the distance of the Moon from the Earth and drew the first accurate star map. He developed an organization of the universe that, although it had the Earth at the centre, provided for accurate prediction of the positions of the...

Hipparchus

Hipparchus (2) (fl. c.260 bc)   Reference library

The Oxford Classical Dictionary (4 ed.)

Reference type:
Subject Reference
Current Version:
2012
Subject:
Classical studies, History
Length:
52 words

... (2) ( fl. c. 260 bc ), New Comedy poet ( see comedy (greek), new ) and (probably) actor. In frs. 1 and 3 foreign drinking-cups (κόνδυ, λαβρώνιος) are mentioned, and in Ζωγράφος (‘The painter’), fr. 2, the painter praises professional skill. R. Kassel and C. Austin , PCG 5. 605...

Hipparchus

Hipparchus (3) (fl. second half of 2nd cent. bc)(astronomer)   Reference library

G. J. Toomer and Alexander Jones

The Oxford Classical Dictionary (4 ed.)

Reference type:
Subject Reference
Current Version:
2012
Subject:
Classical studies, History
Length:
686 words

...it. Most of our knowledge of Hipparchus' other astronomical work comes from Ptolemy (4) 's Almagest (see index under ‘Hipparchus’ in Toomer's trans.). Hipparchus transformed Greek astronomy from a theoretical to a practical science, by applying to the geometrical models (notably the eccentric/epicyclic hypothesis) that had been developed by his predecessors ( see astronomy ) numerical parameters derived from observations, thus making possible the prediction of celestial positions for any given time. In order to do this he also founded trigonometry , by...

Hipparchus

Hipparchus   Quick reference

The Oxford Dictionary of the Classical World

Reference type:
Subject Reference
Current Version:
2007
Subject:
Classical studies, History
Length:
447 words

... 2, astronomer , (fl. second half of 2nd cent. bc ). His recorded observations range from 147 to 127 . His only extant work, the Commentary on the Phainomena of Eudoxus and Aratus , contains criticisms of their descriptions and placings of the constellations and stars ( see aratus ; eudoxus  ), and a list of simultaneous risings and settings. Valuable information on Hipparchus' own star co‐ordinates has been extracted from it. Most of our knowledge of Hipparchus' other astronomical work comes from Ptolemy's (2) Almagest . Hipparchus...

Hipparchus

Hipparchus   Quick reference

A Dictionary of Scientists

Reference type:
Subject Reference
Current Version:
2003
Subject:
Science and technology
Length:
312 words

... ( c. 170 bc – c. 120 bc ) Greek astronomer and geographer Born at Nicaea, which is now in Turkey, Hipparchus (hi- par -kus) worked in Rhodes, where he built an observatory, and in Alexandria. None of his works has survived but many of them were recorded by Ptolemy. In 134 bc he observed a new star in the constellation of Scorpio. This led him to construct a catalog of about 850 stars. By comparing the position of the stars of his day with those given 150 years earlier he found that Spica, which was then 6° from the autumn equinox, had previously...

Hipparchus

Hipparchus (fl. 136–127)   Reference library

The Oxford Encyclopedia of Maritime History

Reference type:
Subject Reference
Current Version:
2007
Subject:
History, Military History
Length:
577 words

...planets, and the sun. Greek academic astronomy during the two or three centuries before Hipparchus, however, had been more concerned with physical and geometrical explanations of phenomena rather than with the practical matching of theory to observation. Hipparchus changed all this, in ways that we can readily appreciate from the many references to his work contained in the Almagest of the Alexandrian astronomer Ptolemy, nearly three centuries later. Hipparchus used existing geometrical models to explain the motions of the sun and moon, modified them,...

Hipparchus

Hipparchus   Quick reference

G. J. Toomer

Who's Who in the Classical World

Reference type:
Subject Reference
Current Version:
2003
Subject:
Classical studies, History
Length:
539 words

... , astronomer (fl. second half of 2nd cent. bc ). Born at Nicaea in Bithynia, he spent much of his life in Rhodes; his recorded observations range from 147 to 127. His only extant work, the Commentary on the Phainomena of Eudoxus and Aratus , in three books, contains criticisms of the descriptions and placings of the constellations and stars by those two ( see ARATUS (1) ; EUDOXUS ), and a list of simultaneous risings and settings. Valuable information on Hipparchus' own star coordinates has been extracted from it. Most of our knowledge of Hipparchus...

Hipparchus

Hipparchus (1)   Reference library

Rosalind Thomas

The Oxford Classical Dictionary (4 ed.)

Reference type:
Subject Reference
Current Version:
2012
Subject:
Classical studies, History
Length:
150 words

... (1) , younger son of Pisistratus of Athens (6th cent. bc ). Closely associated with his elder brother Hippias (1) , he was known particularly as patron and lover of the arts ( Ath. pol. 18). He invited Anacreon and Simonides to Athens, and set up herms around Attica with words of gnomic wisdom ([Pl.] Hipparch. 228d–e); see gnome . The same source (228b) credits him, improbably, with bringing the text of Homer to Athens, and more plausibly, with adding Homeric recitals to the Panathenaea . It is unclear how much of the artistic...

Hipparchus 1

Hipparchus 1   Quick reference

The Oxford Dictionary of the Classical World

Reference type:
Subject Reference
Current Version:
2007
Subject:
Classical studies, History
Length:
98 words

... 1 , younger son of Pisistratus of Athens (6th cent. bc ). Closely associated with his elder brother Hippias (1) , he was known esp. as patron and lover of the arts. He invited Anacreon and Simonides to Athens, and set up herms around Attica with words of gnomic wisdom; see gnome . He may have added Homeric recitals to the Panathenaea ( see rhapsodes ). It is unclear how much of the artistic momentum of Pisistratid Athens (esp. the temple of Olympian Zeus ) should be associated specifically with him. He was murdered...

Hippa'rchus

Hippa'rchus   Reference library

The Oxford Companion to Classical Literature (3 ed.)

Reference type:
Subject Reference
Current Version:
2011
Subject:
Literature, Classical studies
Length:
316 words

... 1. Younger son of Peisistratus , tyrant of Athens, who was closely associated with his brother Hippias (1) when the latter ruled Athens after the death of their father in 527 bc . Known particularly as a patron of literature and art, he was murdered by Harmodius and Aristogeiton in 514 bc . 2. ( c. 190–after 126 bc ) Reputedly the greatest of ancient astronomers, who transformed Greek astronomy from a theoretical science to one based on observation. He was a Greek born at Nicaea in Bithynia but later living in Rhodes. His only surviving...

Hipparchus of Nicaea

Hipparchus of Nicaea (190–c.120)   Quick reference

A Dictionary of Astronomy (3 ed.)

Reference type:
Subject Reference
Current Version:
2018

... of Nicaea ( c . 190– c .120 bc ) Greek astronomer , geographer , and mathematician , born in modern Turkey . He put Greek astronomy on a more scientific footing, introducing arithmetic and early trigonometric methods. His many accurate astronomical observations resulted in a catalogue of 850 stars, in which he gave their coordinates and divided them into six magnitude classes. Ptolemy incorporated the catalogue and other findings by Hipparchus in the Almagest . Hipparchus made surprisingly accurate measurements of the precession of the...

Hipparchus

Hipparchus n   Reference library

The Oxford Dictionary of Original Shakespearean Pronunciation

Reference type:
Subject Reference
Current Version:
2016

...Hipparchus n ɪˈpɑ:ɹkǝs, hɪ- sp Hiparchus 1 ...

Hipparchus

Hipparchus (c.170 bcc.120 bc)   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

... ( c. 170 bc – c. 120 bc ) Greek astronomer and geographer...

Hipparchus

Hipparchus   Quick reference

New Oxford Rhyming Dictionary (2 ed.)

Reference type:
Subject Reference
Current Version:
2013
Subject:
Language reference
Length:
67 words

... • Bacchus , Caracas, Gracchus • Damascus • Aristarchus , carcass, Hipparchus, Marcus • discus , hibiscus, meniscus, viscous • umbilicus • Copernicus • Ecclesiasticus • Leviticus • floccus • caucus , Dorcas, glaucous, raucous • Archilochus , Cocos, crocus, focus, hocus, hocus-pocus, locus • autofocus • fucus , Lucas, mucous, mucus, Ophiuchus, soukous • ruckus • fuscous • abacus • diplodocus • Telemachus • Callimachus • Caratacus • Spartacus • ...

Hipparchus

Hipparchus   Quick reference

New Oxford American Dictionary (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
50 words
Hipparchus

Hipparchus   Reference library

The New Zealand Oxford Dictionary

Reference type:
English Dictionary
Current Version:
2005
Subject:
English Dictionaries and Thesauri
Length:
45 words
Hipparchus

Hipparchus   Quick reference

Oxford Dictionary of English (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
50 words
Hipparchus

Hipparchus   Reference library

The Canadian Oxford Dictionary (2 ed.)

Reference type:
English Dictionary
Current Version:
2005
Subject:
English Dictionaries and Thesauri
Length:
34 words
Hipparchus

Hipparchus  

Reference type:
Overview Page
(fl. c.260 bc),New Comedy poet (see comedy (Greek), New) and (probably) actor. In frs. 1 and 3 foreign drinking-cups (κόνδυ, λαβρώνιος) are mentioned, and in Ζωγράφος (‘The painter’), fr. 2, the ...
Hipparchus

Hipparchus  

Reference type:
Overview Page
Astronomer, (fl. second half of 2nd cent. bc). His recorded observations range from 147 to 127. His only extant work, the Commentary on the Phainomena of Eudoxus and Aratus, contains criticisms of ...

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