c. 190 BC|
c. 120 BC|
Hipparchus o Nicaea (Greek: Ἵππαρχος, Hipparkhos; c. 190 – c. 120 BC), wis a Greek astronomer, geografer, an mathematician. He is considered the foonder o trigonometry but is maist famous for his incidental discovery o precession o the equinoxes.
Hipparchus wis born in Nicaea, Bithynia (nou İznik, Turkey), an probably dee'd on the island o Rhodes, Greece. He is kent tae hae been a wirkin astronomer at least frae 162 tae 127 BC. Hipparchus is conseedert the greatest auncient astronomical observer an, bi some, the greatest overaw astronomer o antiquity. He wis the first that's quantitative an accurate models for the motion o the Sun an Muin survive. For this he certainly made uise o the observations an aiblins the mathematical techniques accumulatit ower centuries bi the Babylonies an bi Meton o Athens (5t century BC), Timocharis, Aristyllus, Aristarchus o Samos an Eratosthenes, amang ithers. He developed trigonometry an constructit trigonometric tables, an he solved several problems o spherical trigonometry. Wi his solar an lunar theories an his trigonometry, he mey hae been the first tae develop a reliable method tae predict solar eclipses. His ither reputit achievements include the diskivery an meisurment o Yird's precession, the compilation o the first comprehensive starn catalogue o the wastren warld, an possibly the invention o the astrolabe, an aw o the airmillary sphere, that he uised in the creaution o muckle o the starn catalogue.
References[eedit | eedit soorce]
- C. M. Linton (2004). From Eudoxus to Einstein: a history of mathematical astronomy. Cambridge University Press. p. 52. ISBN 0-521-82750-7.
- G J Toomer's chapter "Ptolemy and his Greek Predecessors" in "Astronomy before the Telescope", British Museum Press, 1996, p. 81.
- Stephen C. McCluskey (2000). Astronomies and cultures in early medieval Europe. Cambridge University Press. p. 22. ISBN 978-0-521-77852-7.
- Jones, Alexander Raymond (2017). Hipparchus. Encyclopedia Britannica, Inc. Archived frae the oreeginal on 6 August 2017. Retrieved 25 August 2017.