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  2. Three-prong adaptor - Wikipedia

    en.wikipedia.org/wiki/Three-prong_adaptor

    The flat parallel plug blades are polarized to prevent the hot and the neutral connections from being reversed. In addition, many versions have a molded obstruction bump on top of the adapter, to block the grounding prong and thus physically prevent forcible insertion of a 3-prong plug in the wrong orientation. [citation needed]

  3. Double chimney - Wikipedia

    en.wikipedia.org/wiki/Double_chimney

    A double chimney (or double stack, double smokestack in American English) is a form of chimney for a steam locomotive, where the conventional single opening is duplicated, together with the blastpipe beneath it. Although the internal openings form two circles, the outside appearance usually forms a single elongated oval.

  4. Polarity symbols - Wikipedia

    en.wikipedia.org/wiki/Polarity_symbols

    The adapter typically supplies power to the device through a thin electrical cord which terminates in a coaxial power connector often referred to as a "barrel plug" (so-named because of its cylindrical shape). The polarity of the adapter cord and plug must match the polarity of the device, meaning that the positive contact of the plug must mate ...

  5. Chimney - Wikipedia

    en.wikipedia.org/wiki/Chimney

    A chimney cowl or wind directional cap is a helmet-shaped chimney cap that rotates to align with the wind and prevent a downdraft of smoke and wind down the chimney. An H-style cap is a chimney top constructed from chimney pipes shaped like the letter H. It is an age-old method of regulating draft in situations where prevailing winds or ...

  6. The 10 biggest Oscar snubs ever: Who never made it to the ...

    www.aol.com/10-biggest-oscar-snubs-ever...

    With the 2025 Academy Awards airing Sunday, March 2 (ABC and Hulu, 7 p.m. ET/4 PT), we look back at the biggest Oscar snubs of all time.

  7. Fred Dibnah - Wikipedia

    en.wikipedia.org/wiki/Fred_Dibnah

    Beneath the chimney, an engine room contained an 1854 single-cylinder steam engine in poor condition. Dibnah repaired the chimney and several weeks later was asked to repair the engine, which he dismantled during the winter of 1988/89 and took back to Bolton. [50] With his assistant Neil Carney, he spent six months repairing the engine.

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