Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 333
surfaces the path of the two raysmay be determined by the method already employed in Art. 187. Thus letic (Fig. 151) be thedirection of the incident light fallingon a crystal of Iceland spar, AB. Letthe plane of incidence contain theoptic axis ab. Withc as a centre, andwith ic produced as the major… … Fig. 151. POLARIZED LIGHT. 323 circle with a radius equal to the distance light will travelin air while the ordinary ray travels over the radius of thesmall circle in the spar. Then if nm is tangent to the outercircle at the point of intersection with ic produced, it isparallel to the incident…
Physics
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