Philosophical instructor, or, Webster's elements of natural philosophy : subdivided into principles and illustrations ; intended for academies, medical schools, and the popular class-room (1824)
Eaton, Amos, 1776-1842, Webster, John, fl. 1804-1824 · Albany : Printed by Websters and Skinners ... · leaf 186
nnual courses cross the eclip-tic, or suns apparent path, in two opposite pointscalled the nodes. But the planets do not move in thesame plane with each other, as they cross the eclipticin different parts of the heavens. This may be pro-perly represented by placing different sized hoopswithin each… … THE SUN AND PLANETS. IBS a e b p represents the orbitof a planet, with the sun in oneof the foci c d ; the axis a b iscalled the line of the apsides ;and when the sun is at d, andthe planet at a, its greatestdistance from it, the planet issaid to be in its aphelion, or higher apsis ; when it isat…
Physics
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
