History of the planetary systems from Thales to Kepler (1906)
Dreyer, J. L. E. (John Louis Emil), 1852-1926 · Cambridge University Press · leaf 346
ewritten in 1587, attributes the idea to Rheticus, anil asks how the excentricityof the sun can have anything to do with the changes of empires. TychonhKpist. astr. p. 181. - Lib. iv. cap. 3, p. 235. • Ibid, cap. 8, p. 2;i7. 334 opemiciis [oh. occurring at quadrature1. The apparent diameter of the… … In the planetary theories Copernicus had the great advan-tage over Ptolemy, that he had (as regards the motion inlongitude) only the first inequality to deal with, the period ofwhich is the sidereal period of revolution. This Ptolemy hadaccounted for by the excentric circle and the equant or…
Astronomy -- History · Solar system
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-187-103.webp)
