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  2. MG 151 cannon - Wikipedia

    en.wikipedia.org/wiki/MG_151_cannon

    The Maschinengewehr (MG) 151 is a belt-fed autocannon for aircraft use, developed in Nazi Germany from 1934 to 1940 and produced by Waffenfabrik Mauser during World War II.It was originally produced in 15.1 mm caliber from 1940, with a 15×96mm cartridge, but due to demand for higher effect against aircraft, especially with the introduction of mine shells for the 20 mm MG-FF/M aircraft cannon ...

  3. Twentieth Amendment to the United States Constitution

    en.wikipedia.org/wiki/Twentieth_Amendment_to_the...

    On February 15, 1933, 23 days after the amendment was adopted, President-elect Roosevelt was the target of an assassination attempt by Giuseppe Zangara. While Roosevelt was not injured, had the attempt been successful, then vice president-elect John Nance Garner would have become president on March 4, 1933, pursuant to Section 3.

  4. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    All NEMA 6 devices are three-wire grounding devices (hot-hot-ground) used for 208 and 240 V circuits and rated for 250 V maximum, with the 6-15, 6-20 and 6-30 being grounding versions of the 2-15, 2-20 and 2-30, respectively. The 6-15 resembles the 5-15, but with collinear horizontal pins, spaced 23 ⁄ 32 in (18.3 mm) center-to-center. The 20 ...

  5. Austin 25/30 - Wikipedia

    en.wikipedia.org/wiki/Austin_25/30

    It was also available in a cheaper version as a 15/20 hp [note 1] complete at £500 (chassis, £425) as well as the 25/30 hp for £650 (chassis, £550). The sole concessionaire for sale of the cars was Mr Harvey du Cros junior [ 2 ] (1872-1928).

  6. Simplification - Wikipedia

    en.wikipedia.org/wiki/Simplification

    Simplification is the process of replacing a mathematical expression by an equivalent one that is simpler (usually shorter), according to a well-founded ordering. Examples include:

  7. Richard Koch - Wikipedia

    en.wikipedia.org/wiki/Richard_Koch

    The 80/20 Manager: Ten ways to become a Great Leader. Piatkus/Little Brown, 2013 ISBN 978-0-7499-5925-8; The 80/20 Principle and 92 Other Powerful Laws of Nature: The Science of Success. Nicholas Brealey Publishing, 2014. ISBN 978-1-85788-611-5 & ISBN 978-1-85788-918-5; Simplify (with Greg Lockwood) London : Piatkus, 2018.

  8. PDP-11 - Wikipedia

    en.wikipedia.org/wiki/PDP-11

    PDP–11/20 and PDP–11/15 – 1970. [15] The 11/20 sold for $11,800. [16] The original, non-microprogrammed processor was designed by Jim O'Loughlin. Floating point is supported by peripheral options using various data formats. The 11/20 lacks any kind of memory protection hardware unless retrofitted with a KS-11 memory mapping add-on. [17]

  9. 1/2 − 1/4 + 1/8 − 1/16 + ⋯ - ⋯ - Wikipedia

    en.wikipedia.org/wiki/1/2_%E2%88%92_1/4_%2B_1/8...

    Demonstration of ⁠ 2 / 3 ⁠ via a zero-value game. A slight rearrangement of the series reads + + =. The series has the form of a positive integer plus a series containing every negative power of two with either a positive or negative sign, so it can be translated into the infinite blue-red Hackenbush string that represents the surreal number ⁠ 1 / 3 ⁠: