Nystrom, John W. (John William), 1824-1885 · Philadelphia, J.B. Lippincott · leaf 326
0+0-05416 ~ 0*05386When D = 1380 feet, the length I =4*94421 feetAYhenD = oo, Z = 4*8333 + 0*05386 =4*88719 „ Les. [0*05702 „Micrometrical motion of eye lens < 0*68424 incl ^ i15 nearly. Table of Refractive Indices* Substances. Index,m. J2-97\2-50 2-55 2-45 1-57 1-52 1-63 1-47 Substances.… … 314 JPmwi. An emergent rays of light a af falling upon atransparent medium A (say a glass prism) will betransmitted through in the direction a />, and de-livered in the direction b b, parallel to a a a.V— angle of incident, v — angle of refraction. Indix of refraction m =■ sin, v
Mechanical engineering · Engineering
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