Drawing shadows. 19th-century sciagraphic projections demonstrating how to draw shadows. Sciagraphy is the use of shading and the projection of shadow
Drawing shadows. 19th-century sciagraphic projections demonstrating how to draw shadows. Sciagraphy is the use of shading and the projection of shadows to show perspective in architectural or technical drawing. This diagram is from 'Traite de la science du dessin' (Treatise on the science of drawing, 1821) by French engineer Louis-Leger Vallee (1784-1864).
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Photo credit: © KING'S COLLEGE LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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