A compendium of astronomy; containing the elements of the science, familiarly explained and illustrated, with the latest discoveries. Adapted to the use of schools and academies, and of the general reader (1850)
Olmsted, Denison, 1791-1859 · New York, R. B. Collins · leaf 65
common year begins on a certain day of the week,how will it end ? How is it with leap year ? How does anyday of the month compare in the preceding and following yearwith respect to the day of the week 1 How is this in leap year 1 84. How did the most ancient nations acquire their knowl-edge of the… … resents the concave surface of the sphere, A, B, twopoints on it, as two stars, and CA, CB, straight linesdrawn from the spectator to those points, then the angu-lar distance between them is measured by the arc AB,or the angle ACB. But this angle may be measured ona much smaller circle, having the…
Astronomy
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![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-168-96.webp)
