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The universe of Ptolemy The history of science is very vast. It would be foolhardy to summarize it within the limits of this material. We choose here two important moments in this story that will serve to illustrate how knowledge progresses. Between the years 130-141 AD, roughly, the Alexandrian astronomer Claudius Ptolemy created a model to explain the movements of the planets and celestial bodies in general. Ptolemy gave the string a story of astronomical models very fertile, dating back to the fifth century Platonic Academy As we can see in the images, in Ptolemy's model the Earth occupies the center of the universe. Around it are the planets, the sun and moon. For a long time, since Plato, the great difficulty of astronomers was to explain the motion of planets, or because they have certain trajectories observed from the point of view of those who are on earth. Ptolemy takes ideas from other astronomers, especially the astronomer Apollonius, and imagine the following structure: the earth is motionless, but is positioned slightly away from the center, as we can see in the picture above. The planets move in an imaginary circle called "epicycle." The epicycle has a center that moves into another circle called "respectful". Ptolemy imagined a line called "equant" to explain the nonuniform motion of the planets. The "equant" point is located next to the center of the larger circle, the deferent, and about which the planets make their move epicliclo. It is apparent that the system is very complex. But surprisingly, it was used until the sixteenth century, when the astronomer Copernicus challenged the thesis that the Earth is the center of the planetary movements and the universe. The ideas of Copernicus suffered stiff resistance from the Church, but eventually prevailed as true. Remember, however, the historical record of study and insight of the ancients, that to great lengths to explain the universe.
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Svemir Ptolomeja Povijest znanosti je vrlo velika. Bilo bi glupo da ga sažeti u granicama ovog materijala. Odlučili smo ovdje dvije važne trenutke u ovoj priči koja će poslužiti za ilustraciju kako znanje napreduje. Između godina 130-141 AD, ugrubo, Aleksandrijska astronom Klaudije Ptolomej stvorio je model za objašnjenje kretanja planeta i nebeskih tijela u cjelini. Ptolomej je dao gudačkim priču o astronomskih modela vrlo plodne, koja datira iz petog stoljeća Platonove akademije Kao što možete vidjeti na slikama, u Ptolomejevog modelu Earth zauzima središte svemira. Oko njega su se planete, Sunce i Mjesec. Za dugo vremena, od Platona, velika poteškoća astronoma je objasniti gibanje planeta, ili zbog toga što oni imaju određene putanje promatrati iz perspektive onih koji su na zemlji. Ptolomej se ideje iz drugih astronoma, osobito astronom Apolonije, i zamisliti sljedeću strukturu: Zemlja je nepomično, ali se nalazi malo dalje od centra, kao što možemo vidjeti na slici gore. Planeti se presele u imaginarnom kruga koji se zove "putanja unutrašnjeg kruga." Putanja unutrašnjeg kruga ima svoj centar koji se kreće u drugi krug pod nazivom "poštovanja". Ptolomej zamisliti liniju pod nazivom "equant" objasniti nejedinstven gibanje planeta. "Equant" točka se nalazi odmah do središta šireg kruga, popustljiv, a oko koje se planeti napraviti svoj potez epicliclo. Očito je da sustav je vrlo složen. Ali, začudo, to je bio korišten sve do šesnaestog stoljeća, kada je astronom Kopernik osporio tezu da je Zemlja središte planetarnih kretanja i svemira. Ideje Kopernika pretrpio jakim otporom od Crkve, ali na kraju prevladalo kao istinito. Zapamtite, međutim, povijesni rekord studija i oštroumnošću pradjedova, koji na velike duljine objasniti svemir.