Brocklesby, John, 1811-1889. [from old catalog] · New York, Sheldon and company · leaf 73
g of all heavenly bodies ? Does itlengthen or shorten the period of their visibility 1 Do the temperature and pressure of theatmosphere influence refraction 1 What is se\d respecting the construction of the taMeiin Art 83 ? What is parallax OF PARALLAX. 61 of visible direction, would in a general… … PARALLAX EXPLAINED. the position of that of the other. The ball would beseen by the first in the direction ABX, and by thesecond, in the direction OBY, and the angle ABC wouldbe the parallax of the ball, or the angular displacementthat it suffers by being viewed from the two stationsA and C. 91.…
Astronomy
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