The elements of natural and experimental philosophy .. (1834)
Phillips, R. (Richard), Sir, 1767-1840, Smith, E. A · New York, M'Elrath, Bangs & Herbert · leaf 268
rises from the diurnal motion, is the same whichwould arise from a change of station from the surface to the cen-tre ; for, in either case, the change of the spectators line of viewis the same. Hence appears the propriety of the above definitionof the diurnal parallax. 888. What is said concerning… … CCCXXXIV. The parallax of any planet isalways proportional to the angle which a semi-diameter of the Earth, drawn from the station ofthe spectator upon the surface to the centre, wouldsubtend, if viewed from the planet. Obs. 1. If the planet be at H, Fig. 81, and the spectator at A,AHT will be his…
Physics
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