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  2. Ruled paper - Wikipedia

    en.wikipedia.org/wiki/Ruled_paper

    Ruled paper (or lined paper) is writing paper printed with lines as a guide for handwriting. The lines often are printed with fine width and in light colour and such paper is sometimes called feint-ruled paper. Additional vertical lines may provide margins, act as tab stops or create a grid for plotting data; for example, graph paper ( squared ...

  3. Red/black concept - Wikipedia

    en.wikipedia.org/wiki/RED/BLACK_concept

    Red/black box. The red/black concept, sometimes called the red–black architecture [1] or red/black engineering, [2] [3] refers to the careful segregation in cryptographic systems of signals that contain sensitive or classified plaintext information ( red signals) from those that carry encrypted information, or ciphertext ( black signals ).

  4. Carbonless copy paper - Wikipedia

    en.wikipedia.org/wiki/Carbonless_copy_paper

    Carbonless copy paper ( CCP ), non-carbon copy paper, or NCR paper (No Carbon Required, taken from the initials of its creator, National Cash Register) is a type of coated paper designed to transfer information written on the front onto sheets beneath. It was developed by chemists Lowell Schleicher and Barry Green, [1] as an alternative to ...

  5. Sandpaper - Wikipedia

    en.wikipedia.org/wiki/Sandpaper

    Sandpaper. Sheets of sandpaper with different grit sizes (40 (coarse), 80, 150, 240, 600 (fine)) Sandpaper, also known as glasspaper or as coated abrasive, is a type of material that consists of sheets of paper or cloth with an abrasive substance glued to one face. [1] In the modern manufacture of these products, sand and glass have been ...

  6. Thermal paper - Wikipedia

    en.wikipedia.org/wiki/Thermal_paper

    Thermal paper (often supplied in roll form, and sometimes referred to as an audit roll) is a special fine paper that is coated with a material formulated to change color locally when exposed to heat. It is used in thermal printers, particularly in inexpensive devices such as adding machines, cash registers, and credit card terminals and small ...

  7. Paper - Wikipedia

    en.wikipedia.org/wiki/Paper

    Paper is a thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, rags, grasses, or other vegetable sources in water, draining the water through a fine mesh leaving the fibre evenly distributed on the surface, followed by pressing and drying. Although paper was originally made in single sheets ...

  8. Polistes carolina - Wikipedia

    en.wikipedia.org/wiki/Polistes_carolina

    Polistes carolinus (Linnaeus, 1767) Vespa carolina Linnaeus, 1767. Polistes carolina is one of two species of red paper wasp found in the eastern United States (the other being Polistes rubiginosus) and is noted for the finer ridges on its propodeum. It is a social wasp in the family Vespidae and subfamily Polistinae.

  9. History of paper - Wikipedia

    en.wikipedia.org/wiki/History_of_paper

    Paper in China Earliest known extant paper fragment unearthed at Fangmatan, circa 179 BCE Hemp wrapping paper, Western Han period of China, circa 100 BCE Oldest paper book, Pi Yu Jing, composed of six different materials, circa 256 CE The world's earliest known printed book (using woodblock printing), the Diamond Sutra of 868, shows the widespread availability and practicality of paper in China.

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