Glossary, ContinuedS (Continued)SETTING— Background or surrounding.SHADE— A mixture of pure color and black.SHADING— Lines, values, or color applied to create form, shadow, orpattern.SHADING MEDIUMS— Preprinted tones and patterns used to enhance theappearance of copy and artwork.SHADING SHEETS— Sheets of cellophane or acetate preprinted with tonesand patterns with a low-tack adhesive for applying to artwork.SHAPE— The flat silhouette or two-dimensional form of an object.SHELF LIFE— The length of time before sensitized material deteriorates.SHIP’S CURVES— Instruments for drawing elongated, irregular curves thatclosely approximate the curves found in shipbuilding.SHUTTER SPEED— A method of controlling the length of time that lightcan reach a film.SIGHT LINE— An imaginary line extending from the eyes of a figure in adrawing to an object indicating that person’s direction of glance.SINGLE-ACTION AIRBRUSH— A device that releases both air andpigment by pressing down on a button.SIGNATURE— A sheet of paper printed on both sides and folded to make uppart of a publication.SILHOUETTE— An outline of an object or figure filled in solidly withoutindication of modeling or surface structure.SILKSCREEN— A method of printing through a stencil fixed to a screen ofnatural or synthetic fiber or metal mesh.Continued on next pageAI-55
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