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 91
so, is the distance SE; hence the greatestelongation is also variable, being found to lie between the limitsof about 45° and 47°. Assuming its mean value to be 46°, wehave in the right-angled triangle VSE, VS = SE sin 46°= .72 SE.Neglecting the inclination of the orbit of Venus to the planeof the… … * If we know the periodic time of Venus and that of the earth, the ratioof the distances of these two planets from the sun can be obtained by KeplersThird Law (Art. 117), that the squares of the periodic times of any twoplanets are proportional to the cubes of their mean distances from the sun. 86…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
