Lange, David C. (David Christoph) · New York : John Wiley & Sons ; London : Chapman & Hall · leaf 114
ine of a double-curved surface of revolution. Let a Sphere and Scotia be given. (Fig. 57.) It isrequired to find the highest and lowest points in the shade-lines and shadow-lines. This problem is a special application of the SlicingMethod. A Slicing Plane of light, perpendicular to… … X and V are the highest and lowest points of shade Fig. 57
Shades and shadows · Geometry, Descriptive
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