Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 312
ing as new centres of disturbance. This phenomenon is calleddiffraction. The waves of lightthus bend around an obstruction,like the edge of the slit, in thesame manner as water-waves runaround an obstruction. The colorswill be intensified if, instead of asingle narrow opening, a series… … 302 LIGHT. all extraneous light should be cut off by properly arranged screens. Let ab (Fig. 149) be a section of the slit, the length ofwhich is perpendicular to the plane of the paper, and letMN\>Q the screen. Then r in the direction of the pencilis nearly equidistant from every point between…
Physics
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