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 34
Fig. Z2 Fig. Z 3 Double Shadows.—If an object is exposed to twoshadows, the one cast by the brightest Hght beingbecause the strong light is cut off, and the shadownot cut off. Where the two shadows cross, the shadow is notand if there is no third source of light it will bepresence of a gas burner…
Shades and shadows
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