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 164
s in a right line with theindex b e. In like manner, if a be removed to 30°,and b to 411°, the refraction of e f will bring the ap-parent place of the limb in a right line with b e.Thus the angle of refraction may be found to any lineof incidence, either out of a rare into a denser medium,or from a… … 162 REELECTED VISION. fracted limb of the other, and the number of degreeson the scale opposite to the shorter index, will be theangle of refraction, whether the incidental ray issuefrom a denser or rarer medium. But as the sines of the angles of incidence and re-fraction, between the same media,…
Physics
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
