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 200
diurnalmotion, every part of each circle, or each meridian,will be brought to the terminator, and carried throughthe illuminated part in the same time, which makesthe days and nights of equal length on every part ofthe globe, except at the poles a and b, where the sunwould be seen during the whole…
Physics
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