The elements of theoretical and descriptive astronomy, for the use of colleges and academies (1872)
White, Charles J. (Charles Joyce), 1839-1917 · Philadelphia, Claxton, Remsen & Haffelfinger · leaf 87
shown by a watch isnoted. This watch, either shortly before or after the observa-tion, is compared with the Greenwich chronometer, and bymeans of this comparison the Greenwich time of the observa-tion is obtained from the time given by the watch. The neces-sary corrections are applied to the… … COMPARISON OF LOCAL TIMES. 81 PZthe co-latitude of the place of observation; the latitude being determined by some one of the methods already given (Art. 79), and being reduced to the time of observation by the run d\ of the ship given by the log. In the triangle PZS, then, having the three sides…
Astronomy
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