The geography of the heavens : and class-book of astronomy : accompanied by a celestial atlas (1860)
Burritt, Elijah H. (Elijah Hinsdale), 1794-1838, Mattison, Hiram, 1811-1868 · New York : Mason Brothers · leaf 303
t con-cave of the heavens. Now,as the light passes fromthe stars, and strikes theatmosphere, it is seen tocurve downward, becauseit strikes the atmosphereobliquely ; and the air in*creases in density as weapproach the Earth. Butas the amount of refraction depends not only upon the density, but also… … 844. What other effects of refraction? 645. Atmospherical refraction? Effect onterrestrial objects ? C46. Upon apparent places of stars, &c. ? REFRACTION AND TWILIGHT. 301 tion wholly ceases. The dark lines in the cut show the true, and the dotted the apparentpositions. In the cut, the depth of…
Constellations · Stars
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![An illustration from Cosmographia in qvatvor libros distribvta summo ordine, miraqve facilitate, ac breuitate ad magnam Ptolemæi mathematicam constructionem, ad vniuersamque astrologiam institutens. Francisco Barocio ... avtore. Cum præfatione eiusdem autoris, in qua perfecta quidem astrologiæ diuisio, & enarratio autorum illustrium, & voluminum ab eis conscriptorum in singulis astrologiæ partibus habetur: Joannis de Sacrobosco verò 84 errores, et alij permulti suorum expositorum, & sectatorum ostenduntur. rationibusq[uam] redarguuntur. Præcesserunt etiam quædam communia mathematica, necnon arithmetica, & geometrica principia, nonnullæq[uam] propositiones, de quibus in toto opere sæpe fit mentio: ac demum locupletissimus index eorum, quæ ipsa Cosmographia continentur .. (1585)](https://img.insideoutlibrary.com/img/200/ia-cosmographiainqv00baro-149-58.webp)
