Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 188
ativeindex. Example. What is the relative index of air and crownglass, the light entering the latter from the former? Thetabular index of crowm glass is 1,52, and that of air is1,0003, whence 1,5200 At^ = 1,52. 1,0003 ELEMENTS OF OPTICS. 179 § 21. If a ray pass from amedium to another more… … Light passingfrom rarer todenser medium; Angle ofincidence taken90°; J- * A ft — = em <t>m (8) from which results a maximum limit to the angle of Maximum limitrefraction. If m be taken equal to 1,52 for the atmos-to angle of x refraction; phere and crown glass, sin 0 = 0,657, or 0 = 41° 5 30,…
Mechanics · Acoustics · Optics
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