Researchers have developed an automatic drawing machine that uses pens and pencils to draw metamaterials -- artificially engineered composite materials that derive their properties from patterned ...
"Portrait of a Man. Charcoal drawing, mounted under white passe-partout. Passe-partout size: 83 x 63.5 cm; subject size: 67 x 48.5 cm (numerous pinholes, creases). Charcoal drawing, mounted Works on ...
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