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afwiki Hipparchos; arwiki أبرخش; arzwiki هيبارخوس; astwiki Hiparco de Nicea; azwiki Hipparx; be_x_oldwiki Гіпарх; bewiki Гіпарх; bgwiki Хипарх; cawiki Hiparc . Hiparco de Nicea is on Facebook. Join Facebook to connect with Hiparco de Nicea and others you may know. Facebook gives people the power to share and. . Hipparchus, also spelled Hipparchos, (born, Nicaea, Bithynia [now Iznik, Turkey] —died after bc, Rhodes?), Greek astronomer and mathematician who made .

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Vitruvio prsentantando De architectura a Augustogravado de Previous to the finding of the proofs of Menelaus a century ago, Ptolemy was credited with the invention of spherical trigonometry. Archived from the original on 5 June Toomer”Hipparchus” ; and A. He was the xe whose quantitative and accurate models for the motion of the Sun and Moon survive. People List of ancient Greeks.

Hiparco de Nicea – Spanish-Greek Dictionary – Glosbe

This has led to speculation that Hipparchus knew about enumerative combinatoricsa field of mathematics that developed independently in modern mathematics. Pliny Naturalis Historia II. In fact, his astronomical writings were numerous enough that he published an annotated list of them. With his value for the eccentricity of the orbit, he could compute the least and greatest distances of the Moon too. See also these analyses’ summary Archived 2 April at the Wayback Machine.

City states Politics Military. Ciencia, historia y sociedad. Thank you for your feedback. Ptolemy later used spherical trigonometry to compute things like the rising and setting points of the eclipticor to take account of the lunar parallax. Through the Greeks it passed to Arab scientists during the Middle Ages and thence to Europe, where it remained….

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Toomera historian of astronomy, has ds that Ptolemy’s knowledge of eclipse records and other Babylonian observations in the Almagest came from a list made by Hipparchus. May Learn how and when to remove this template message.


Joseph Pitton de Tournefort. According to Ptolemy, Hipparchus was aware that the movements of the planets were too complex to be accounted for by the hipardo simple models, but he did not attempt to devise a satisfactory planetary theory. Science and Society nlcea East and in West por P. He is considered the founder of trigonometry [1] but is most famous for his incidental discovery of precession of the equinoxes.

Hipparchus may have used a globe for these tasks, reading values off coordinate grids drawn on it, or he may have made approximations from planar geometry, or perhaps used arithmetical approximations developed by the Chaldeans. For this he certainly made use of the observations and perhaps the mathematical techniques accumulated ed centuries by the Babylonians and by Meton of Athens 5th century BCTimocharisAristyllusAristarchus of Samos and Eratosthenesamong others.


Mathematical astronomy In mathematics: This article is about the Greek astronomer. En a firma Intel pon a punto o primeiro microprocesador e en Apple comercializa a primeira computadora persoal. Medieval European science Indian astronomy Medieval Islamic astronomy.

With this method, as the parallax of the Sun decreases i. Hipparchus and his predecessors used various instruments for astronomical calculations and observations, such as the gnomonthe astrolabeand the armillary sphere. Escola de tradutores de Toledo.

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Kottak, Conrad Philippe Hipparchus is credited with the invention or improvement of several astronomical instruments, which were used for a long time for naked-eye observations. Almaxesto e Claudio Tolomeo. Hipparchus must have been the first to be able to do this. His other reputed achievements include the discovery and measurement of Earth’s precession, the compilation of the first comprehensive star catalog of the western world, and possibly the invention of the astrolabealso of the armillary spherewhich he used during the creation of much of the star catalogue.


He knew that this is because in the then-current models the Moon circles the center of the Earth, but the observer is at the surface—the Moon, Earth and observer hiparvo a triangle with a sharp angle that changes all the time.

Timeline of ancient Greek mathematicians. Espazos de nomes Artigo Conversa.

From Eudoxus to Einstein: It was disputed whether the star nocea in the Almagest is due to Hipparchus, but — statistical and spatial analyses by R. Ptolemy mentions Almagest V. Lunar parallax View More.

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He communicated with observers at Alexandria in Egypt, who provided him with some times of equinoxesand probably also with astronomers at Babylon.

In the first book, Hipparchus assumes that the parallax of the Sun is 0, as if it is at infinite distance. In addition to varying in apparent speed, the Moon diverges north and south of the ecliptic, and the periodicities of these phenomena are different. Ptolemy describes the details in the Almagest IV.

According to Pliny the Elder ad 23—79Hipparchus created a star catalog that assigned names to each star along with his measurements of their positions.

He tabulated values for the chord function, which gives the length of the chord for each angle. Learn More in these related Britannica articles: Hipparchus was recognized as the first mathematician known to have possessed a trigonometric tablewhich he needed when computing the eccentricity of the orbits of the Moon and Sun.

Lunar theory and Orbit of the Moon. Na Galipedia, a Wikipedia en galego. Retrato de Robert Hookepola pintora de historia Rita Greer, RackhamLoeb Classical Library p.