A new manual of the elements of astronomy, descriptive and mathematical .. (1868)
Kiddle, Henry, 1824-1891 · New York, Ivison, Phinney, Blakeman & co.; Chicago, S.C. Griggs & co. · leaf 84
R THE TERRESTRIAL GLOBE.Problem I.—To find on what two days of the year thesun is vertical at any place in the Torrid Zone: Turn theglobe around, and observe what two points of the eclipticpass under the degree of the brass meridian correspondingto the latitude of the place; and the days opposite… … DOTATION OF TWILIGHT. 80 PROBLEMS FOR THE GLOBE. Problem II.—To find the time of the suns rising andsetting, and the length of the day, at any place, and on anyday in the year: Elevate the pole as many degrees as areequal to the latitude of the place, find the suns place, bringit to the meridian,…
Astronomy
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