A compendium of astronomy; containing the elements of the science, familiarly explained and illustrated, with the latest discoveries. Adapted to the use of schools and academies, and of the general reader (1850)
Olmsted, Denison, 1791-1859 · New York, R. B. Collins · leaf 19
ity of the earth upon the ap-pearance of a ship, when either leaving or approachingthe spectator, is illustrated by Fig. 1. As light proceeds in straight lines, it is evident that,if the earth is round, the top of the ship ought to comeinto view before the lower parts, when the ship is ap-proaching… … a continued plane, then the spectator would see all partsof the ship at the same time, as is represented in the an-nexed figure. Fig. 2.
Astronomy
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