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The grammar of photo-engraving : containing instruction in drawing, chemistry and optics, as applied to photo-engraving, and a practical treatise on the art of half-tone, zinc etching, swelled gelatine, lithotype and chalk plate engraving, as practiced in the United States (1895)

Farquhar, H. D. (Harry D.), Eder, Josef Maria, 1855-1944 · London : Dawbard & Ward · leaf 27

An illustration from The grammar of photo-engraving : containing instruction in drawing, chemistry and optics, as applied to photo-engraving, and a practical treatise on the art of half-tone, zinc etching, swelled gelatine, lithotype and chalk plate engraving, as practiced in the United States, 1895, leaf 27
by 2, only one ray would strike the plane, the others passing over it. The shadow of any object is al- ways darker than the object itself, even on the side that is in the shade, and there is no light reflected upon the shadow itself. When a shadow falls partly on a horizontal and partly on a… … Fig. 10 This example is plainly illustrated in Fig. 10.

Photoengraving

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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