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  2. Dividing line between metals and nonmetals - Wikipedia

    en.wikipedia.org/wiki/Dividing_line_between...

    In 1891, Walker published a periodic "tabulation" with a diagonal straight line drawn between the metals and the nonmetals. [14] In 1906, Alexander Smith published a periodic table with a zigzag line separating the nonmetals from the rest of elements, in his highly influential [15] textbook Introduction to General Inorganic Chemistry. [16]

  3. Zigzag - Wikipedia

    en.wikipedia.org/wiki/Zigzag

    The trace of a triangle wave or a sawtooth wave is a zigzag. Pinking shears are designed to cut cloth or paper with a zigzag edge, to lessen fraying. [2] In sewing, a zigzag stitch is a machine stitch in a zigzag pattern. [3] The zigzag arch is an architectural embellishment used in Islamic, Byzantine, Norman and Romanesque architecture. [4] [5]

  4. File:JPEG ZigZag.svg - Wikipedia

    en.wikipedia.org/wiki/File:JPEG_ZigZag.svg

    The following other wikis use this file: Usage on ar.wikipedia.org جيه بيه إي جي; Usage on cs.wikipedia.org JPEG; Usage on es.wikipedia.org

  5. Jiayang Coal Railway - Wikipedia

    en.wikipedia.org/wiki/Jiayang_Coal_Railway

    To make transport more efficient, the construction of a 19.84-kilometre (12.33 mi) long narrow-gauge line to Shixi, with a gauge of 600 mm (1 ft 11 + 5 ⁄ 8 in), began in 1958. The line was formally inaugurated on 12 July 1959. In 1960 it was re-gauged to 762 mm (2 ft 6 in). The station at Mifengyan is part of a zig zag.

  6. List of electronic component packaging types - Wikipedia

    en.wikipedia.org/wiki/List_of_electronic...

    In LEDs, transparent epoxy or a silicon caulk-like material that may contain a phosphor is poured into a mold containing the LED(s) and cured. The mold forms part of the package. COF: Chip-on-flex: Variation of COB, where a chip is mounted directly to a flex circuit. Unlike COB, it may not use wires nor be covered with epoxy, using underfill ...

  7. The Fad Toy Everyone Was Obsessed With the Year You Were Born

    www.aol.com/fad-toy-everyone-obsessed-were...

    1963: Easy-Bake Oven. The cooking game changed in 1963 when kids had the power to make baked goods of their own. The mini oven comes with cake mix packets and tiny round pans that, together, make ...

  8. Photomask - Wikipedia

    en.wikipedia.org/wiki/Photomask

    The zig-zag appearance of the photomask is because optical proximity correction was applied to it to create a better print. Lithographic photomasks are typically transparent fused silica plates covered with a pattern defined with a chromium (Cr) or Fe 2 O 3 metal absorbing film. [6] Photomasks are used at wavelengths of 365 nm, 248 nm, and 193 nm.

  9. Icositetragon - Wikipedia

    en.wikipedia.org/wiki/Icositetragon

    A skew zig-zag icositetragon has vertices alternating between two parallel planes. A regular skew icositetragon is vertex-transitive with equal edge lengths. In 3-dimensions it will be a zig-zag skew icositetragon and can be seen in the vertices and side edges of a dodecagonal antiprism with the same D 12d, [2 +,24] symmetry, order 48. The ...