p34_054 - diameter D of the circle in question is D = 2 h...

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54. Reference to Fig. 34-24 may help in the visualization of why there appears to be a “circle of light” (consider revolving that picture about a vertical axis). The depth and the radius of that circle (which is from point a to point f in that ±gure) is related to the tangent of the angle of incidence. Thus, the
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Unformatted text preview: diameter D of the circle in question is D = 2 h tan c = 2 h tan sin 1 1 n w = 2(80 . 0 cm) tan sin 1 1 1 . 33 = 182 cm ....
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