Shades and shadows, with applications to architectural details, and exercises in drawing them with the brush and pen .. (1912)
Ware, William R. (William Robert), 1832-1915 · Scranton, International Textbook Company · leaf 17
t is to say, the invisible shadow of a point is a Linethe visible shadow is a Point; the invisible shadow of a line is a Surface, its visible shadow, a Line; and the invis-ible shadow of a surface is a SoUd, the visible shadow, a Surface; the cast shadows all being intersections of theinvisible… … Fig. I SHADES AND SHADOWS OF POLYHEDRA THE SHADES AND SHADOWSOF SOLID OBJECTS Besides Planes and Plane Figures, theonly subjects treated of in Shades andShadows are Polyhedra, regular andirregular, and Surfaces of Revolution. I. POLYHEDRA Shades and Lines of Shade.—The Lineof Shade upon a…
Shades and shadows
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