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  2. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    Forms Data Format is defined in the PDF specification (since PDF 1.2). The Forms Data Format can be used when submitting form data to a server, receiving the response, and incorporating it into the interactive form. It can also be used to export form data to stand-alone files that can be imported back into the corresponding PDF interactive form.

  3. Antikythera mechanism - Wikipedia

    en.wikipedia.org/wiki/Antikythera_mechanism

    The gear teeth were in the form of equilateral triangles with an average circular pitch of 1.6 mm, an average wheel thickness of 1.4 mm and an average air gap between gears of 1.2 mm. The teeth were probably created from a blank bronze round using hand tools; this is evident because not all of them are even. [ 7 ]

  4. Circle of confusion - Wikipedia

    en.wikipedia.org/wiki/Circle_of_confusion

    Since the final-image size is not usually known at the time of taking a photograph, it is common to assume a standard size such as 25 cm width, along with a conventional final-image CoC of 0.2 mm, which is 1/1250 of the image width. Conventions in terms of the diagonal measure are also commonly used.

  5. Continuous stationery - Wikipedia

    en.wikipedia.org/wiki/Continuous_stationery

    Continuous stationery (UK) or continuous form paper (US) is paper which is designed for use with dot-matrix and line printers with appropriate paper-feed mechanisms. Other names include fan-fold paper, sprocket-feed paper, burst paper, lineflow (New Zealand), tractor-feed paper, and pin-feed paper. It can be single-ply (usually woodfree ...

  6. Dot gain - Wikipedia

    en.wikipedia.org/wiki/Dot_gain

    Dot gain, or tonal value increase, is a phenomenon in offset lithography and some other forms of printing which causes printed material to look darker than intended. It is caused by halftone dots growing in area between the original printing film and the final printed result. In practice, this means that an image that has not been adjusted to ...

  7. Virgin of the Rocks - Wikipedia

    en.wikipedia.org/wiki/Virgin_of_the_Rocks

    The Virgin of the Rocks (Italian: Vergine delle rocce), sometimes the Madonna of the Rocks, is the name of two paintings by the Italian Renaissance artist Leonardo da Vinci, of the same subject, with a composition which is identical except for several significant details. The version generally considered the prime version, the earlier of the ...

  8. Kennewick, Washington - Wikipedia

    en.wikipedia.org/wiki/Kennewick,_Washington

    Kennewick (/ ˈ k ɛ n ə w ɪ k /) is a city in Benton County in the U.S. state of Washington.It is located along the southwest bank of the Columbia River, just southeast of the confluence of the Columbia and Yakima rivers and across from the confluence of the Columbia and Snake rivers.

  9. Lithography - Wikipedia

    en.wikipedia.org/wiki/Lithography

    e. Lithography (from Ancient Greek λίθος (líthos) 'stone' and γράφω (gráphō) 'to write') [1] is a planographic method of printing originally based on the immiscibility of oil and water. [2] The printing is from a stone (lithographic limestone) or a metal plate with a smooth surface. It was invented in 1796 by the German author and ...