[Coffin, John Huntington Crane], 1815-1890. [from old catalog] · New York, D. Van Nostrand · leaf 83
20 = 1862 Sept. 8 9 19 20 P.M. 1863 Jan. 3 23 22 16 = 1863 Jan. 4 11 22 16 A.M.1863 Jan. 4 0 3 30 = 1863 Jan. 4 0 3 30 P.M. 72. The hour-angle of the sun (true or mean), at any me-ridian, is called the local (apparent or mean) solar time. Thehour-angle of the sun (true or mean) at Greenwich at… … 76 NAVIGATION. 73. Tlxe difference of the local times of any two meridiansis equal to the difference of longitude of those meridians. Demonstration. In Fig. 20, letP M, P M be the celestial merid-ians of two places;P S, the declination circle through 9^ the sun (true or mean) ;M P S, the hour-angle…
Navigation · Nautical astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
