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  2. Lincoln–Douglas debate format - Wikipedia

    en.wikipedia.org/wiki/LincolnDouglas_debate...

    LincolnDouglas debate (commonly abbreviated as LD Debate, or simply LD) is a type of one-on-one competitive debate practiced mainly in the United States at the high school level. It is sometimes also called values debate because the format traditionally places a heavy emphasis on logic , ethical values , and philosophy . [ 1 ]

  3. Lincoln–Douglas debates - Wikipedia

    en.wikipedia.org/wiki/LincolnDouglas_debates

    Crisis of the House Divided: An Interpretation of the Issues in the LincolnDouglas Debates, 50th Anniversary Edition. University of Chicago Press. ISBN 978-0-226-39118-2. Good, Timothy S. (2007). The LincolnDouglas Debates and the Making of a President. McFarland Press. ISBN 978-0-7864-3065-9.

  4. The Lincoln–Douglas Debates (1994 reenactments) - Wikipedia

    en.wikipedia.org/wiki/The_LincolnDouglas...

    The 1994 reenactments of the LincolnDouglas Debates took place between August 20 and October 15, 1994, and were facilitated and aired by C-SPAN.They featured historical reenactors presenting, in their entireties, the series of seven debates between Abraham Lincoln and Stephen A. Douglas that took place during the 1858 U.S. Senate campaign in Illinois.

  5. Threaded insert - Wikipedia

    en.wikipedia.org/wiki/Threaded_insert

    TIME-SERT insert. A threaded insert, also known as a threaded bushing, is a fastener element that is inserted into an object to add a threaded hole. [1] They may be used to repair a stripped threaded hole, provide a durable threaded hole in a soft material, place a thread on a material too thin to accept it, mold or cast threads into a work piece thereby eliminating a machining operation, or ...

  6. Annular cutter - Wikipedia

    en.wikipedia.org/wiki/Annular_cutter

    An annular cutter (also called a core drill, core cutter, broach cutter, trepanning drill, hole saw, or cup-type cutter) is a form of core drill used to create holes in metal. An annular cutter, named after the annulus shape , cuts only a groove at the periphery of the hole and leaves a solid core or slug at the center.

  7. U.S. Military connector specifications - Wikipedia

    en.wikipedia.org/wiki/U.S._Military_connector...

    A MIL-DTL-38999 circular connector plated with a nickel–teflon composite. Left: plug (male) type connector; Right: receptacle (female) type connector) Electrical or fiber-optic connectors used by U.S. Department of Defense were originally developed in the 1930s for severe aeronautical and tactical service applications, and the Type "AN" series set the standard for modern military circular ...

  8. Fusible plug - Wikipedia

    en.wikipedia.org/wiki/Fusible_plug

    A fusible plug operates as a safety valve when dangerous temperatures, rather than dangerous pressures, are reached in a closed vessel. In steam boilers the fusible plug is screwed into the crown sheet (the top plate) of the firebox, typically extending about 1 in (25 mm) into the water space above it. Its purpose is to act as a last-resort ...

  9. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    The 20 A plug has a blade rotated 90° (opposite blade from what would be the "line" blade on a 2-15 or 5-15 plug. This prevents accidental insertion of plugs into outlets that use different voltages), and the 6-20R receptacle has a T-shaped hole to accept both 6-15P and 6-20P plugs (similar to the 5-20R receptacle accepting 5-15P and 5-20P plugs).

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