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  2. High-mast lighting - Wikipedia

    en.wikipedia.org/wiki/High-mast_lighting

    The surveys revealed that high-mast lighting was by far the preferred method of lighting. [3] By 1967, Europe was known to have high-mast illumination technology in practice. 1968 saw the first permanent US installations of high-mast illumination starting in Auburn, Washington south of Seattle. The first American towers were 100 ft (30 m) tall ...

  3. Crossword abbreviations - Wikipedia

    en.wikipedia.org/wiki/Crossword_abbreviations

    "current": AC (for "alternating current"); less commonly, DC (for "direct current"); or even I (the symbol used in physics and electronics) Roman numerals: for example the word "six" in the clue might be used to indicate the letters VI; The name of a chemical element may be used to signify its symbol; e.g., W for tungsten

  4. Aviation obstruction lighting - Wikipedia

    en.wikipedia.org/wiki/Aviation_obstruction_lighting

    The mast of Deutschlandsender Herzberg/Elster had no aircraft warning lamps installed. It was instead lit by skybeamers mounted on small masts near the tower. This method was chosen as the mast was a mast radiator insulated against ground and for feeding the lamps on the mast otherwise special devices like Austin transformers would be required.

  5. File:High mast lamp.jpg - Wikipedia

    en.wikipedia.org/wiki/File:High_mast_lamp.jpg

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  6. Light mast - Wikipedia

    en.wikipedia.org/wiki/Light_mast

    Light mast without lamps Light mast at stadium. Light mast is a tall lighting specified [clarification needed] mast, which has several big searchlights on top of it. Light masts illuminates large areas and are possible to move, which is why they are used (for example) as farming, construction and emergency works implement.

  7. Light characteristic - Wikipedia

    en.wikipedia.org/wiki/Light_characteristic

    A light characteristic is all of the properties that make a particular navigational light identifiable. Graphical and textual descriptions of navigational light sequences and colours are displayed on nautical charts and in Light Lists with the chart symbol for a lighthouse, lightvessel, buoy or sea mark with a light on it. Different lights use ...

  8. Glossary of nautical terms (M–Z) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_nautical_terms...

    A small platform partway up the mast, just above the height of the mast's main yard. A lookout is stationed here, and men who are working on the main yard will embark from here. See also crow's nest. masthead light A white running light displayed at the front of a vessel. master 1. The captain of a commercial vessel. 2.

  9. Light tower (equipment) - Wikipedia

    en.wikipedia.org/wiki/Light_tower_(equipment)

    A light tower is a piece of mobile equipment which has one or more high-intensity electric lamps and a mast. Almost always, the lights are attached to the mast, which is attached to a trailer, with a generator set to power the lamps. Normally the lamps are metal halide bulbs and the generator is powered by a diesel engine.