The connection of geography and astronomy, an elementary text-book for Department of science and art examinations

 
9781130386493: The connection of geography and astronomy, an elementary text-book for Department of science and art examinations
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1876 Excerpt: ...st, and for the rest of the year its daily circles are south of that tropic. At the tropic of Capricorn it 62 Daily Circles of the Sun. passes overhead on September 21st, and for the rest of the year its circles are north of that position. „ A, To an observer between the tropic In temperate regions. an tne polar circle in either hemi sphere, the sun rises in the east and sets in tne west parts of the horizon; in the northern hemisphere it is always south at midday; in the southern, always north....,, At either of the polar circles the At the polar,,, circles. longest day is exactly 24 hours, and the longest night the same. From December to June the days increase in the northern, and diminish in the southern hemisphere. From June to December the reverse is the case. To an observer at any place between Between the....,, the tropics, the sun passes overhead at midday at two different periods of the year, with two intervals, during one of which its daily circle will lie north of the zenith, and during the other south of it. The times when the sun passes in, or very near the zenith are the rainy seasons of the different tropical regions; rainy and dry seasons being the only variations which these lands experience. EXERCISES. What is the latitude of London, and the height of the equator above the horizon there? Ii Glasgow be in latitude SSS1' 1 what is the altitude of the polar star there, and that of the equinoctial at its highest point above the southern horizon? Describe the daily circles 01 the fixed stars: (a) at the poles, (b) at the equator, (c) in middle latitudes. On what line does the sun describe its daily circle on September 21st, June 21st, March 21st, and December 21st? Describe the positions of the sun's daily circles throughout the year: (a)...

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