Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 383
from the observer, the otherfrom the earths centre: or what comesto the same thing, it is the angle at thebody made by these two lines. In Fig.121, where S is the sun, G the earthscentre, and 0 the observer, it is the angleOSC, which is the difference between theobserved or apparent zenith… … Fig. 121. forIn 493. Method of Calculating the Local Time from the SunsAltitude (supplementary to Arts. 60 and 69).—In Fig. 122 thecircle NZM is the meridian, P being the pole, Z the zenith, and 364 APPENDIX. [§493 EQ the equator. S is the sun, whose altitude SH has beenmeasured. This altitude…
Astronomy · Constellations
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