Elements of natural philosophy (Volume 2-3) . ye have supposed the angle of incidence 56°, if itwere less or greater than this, similar effects would be ob-served, though less in degree; or, in other words, thewaves first deviated would be elliptically polarized, theeccentricity of the elliptical orbit increasing as the angleapproaches more and more to that of polarization. angle ofincidence differsfrom that ofpolarization. Fig. 93. Position of theplane ofpolarizationdetermined; Analyzerrevolved; Intensity ofreflected beam; The plate JOT is called the polarizer, and M iY, theanalyz
Elements of natural philosophy (Volume 2-3) . ye have supposed the angle of incidence 56°, if itwere less or greater than this, similar effects would be ob-served, though less in degree; or, in other words, thewaves first deviated would be elliptically polarized, theeccentricity of the elliptical orbit increasing as the angleapproaches more and more to that of polarization. angle ofincidence differsfrom that ofpolarization. Fig. 93. Position of theplane ofpolarizationdetermined; Analyzerrevolved; Intensity ofreflected beam; The plate JOT is called the polarizer, and M iY, theanalyzer. The position of the plane of polarization inany plane polarized wave, is readily ascertained by thetotal reflexion which takes place from the analyzer, when,the polarized beam being incident under the polarizingangle, the plane of the analyzer is perpendicular to from this position of the analyzer, with respectto the plane of polarization, and calling a, the angle be-tween the plane of polarization and that of second inci-dence, which is equal to the angle through which theanalyzer has at any time been turned about the firstreflected or polarized beam ; ^4, the intensity of this beam,and 7, the variable intensity of that reflected from theanalyzer in its various positions, the formula I = A cos a. (109) ELEMENTS OF OPTICS. 331 will express, for uncrystallized media, the law according Law expressed to which a polarized be
Size: 2404px × 1040px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectmechanics, booksubjectopticsandphoto
