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A torn sheet of paper Mending the Tears, print by Winslow Homer (1888), Los Angeles County Museum of Art Tearing is the act of breaking apart a material by force, without the aid of a cutting tool . A tear in a piece of paper , fabric , or some other similar object may be the result of the intentional effort with one's bare hands, or be accidental.
It is useful to evaluate web runability, controlling the quality of newsprint and characterizing the toughness of packaging paper. Tear strength for paper is measured in units of force, frequently measured with the Elmendorf Tester. Tear Factor is tear strength per unit basis weight, Tear_Strength/Grammage, or N/g/m 2.
PNG: Portable Network Graphics World Wide Web Consortium.png image/png General purpose Yes PNM: Portable Anymap File Format ASCII.pnm image/x-portable-anymap Yes PostScript: page description/scripting language, levels 1–3 Adobe.ps, .ps2, .ps3 printing/publishing industry standard format PPM: Portable Pixmap File Format ASCII.ppm image/x ...
Screentone: Transparent adhesive sheets manufactured with a distinctive pattern (typically, some form of dots or hatching, but also including a variety of flashy effects like stars or explosions, or commonplace scenes such as cityscapes, schoolyards, and natural landscapes), these are cut out and overlapped on the panel to introduce shading and ...
Transparency information can be included, allowing rendered foreground objects to be composited with photographs or video. It is also sometimes useful to store the contributions of different lights, or of specular and diffuse lighting, as separate channels, so lighting can be adjusted after rendering.
Tracing paper is paper made to have low opacity, allowing light to pass through. Its origins date back to at least the 1300s, when it was used by artists of the Italian Renaissance. [ 1 ] In the 1880s, tracing paper was produced en masse, used by architects, design engineers, and artists. [ 2 ]
Perspective drawing is useful for representing a three-dimensional scene in a two-dimensional medium, like paper. It is based on the optical fact that for a person an object looks N times (linearly) smaller if it has been moved N times further from the eye than the original distance was.