Elements of astronomy ... with explanatory notes, and questions for examination (1855)
Brocklesby, John, 1811-1889 · New York, Farmer, Brace & co. · leaf 69
f all heavenly bodies? Does itlengthen or shorten the period of their visibility ? Do the temperature and pressure of theatmosphere influence refraction ? What is said respecting the construction of the tablesin Art. 82 ? 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 CBY, 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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