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  2. National Register of Historic Places listings in Columbus, Ohio

    en.wikipedia.org/wiki/National_Register_of...

    This is a list of the National Register of Historic Places entries in Columbus, Ohio, United States.The National Register is a federal register for buildings, structures, and sites of historic significance.

  3. Rules of the Road: Interested in the history of road striping ...

    www.aol.com/rules-road-interested-history-road...

    Today road striping is most commonly water-based paint or thermoplastic. I’m no expert in this, so I talked with a couple of people, from city and county public works offices, who know their ...

  4. Municipal Light Plant - Wikipedia

    en.wikipedia.org/wiki/Municipal_Light_Plant

    The Municipal Light Plant is a historic building in the Arena District of Downtown Columbus, Ohio. It was listed on the National Register of Historic Places in 2015. The structure includes an early 20th century Romanesque Revival building and a mid-20th century Art Deco addition.

  5. Airway beacon - Wikipedia

    en.wikipedia.org/wiki/Airway_beacon

    An airway beacon (US) or aerial lighthouse (UK and Europe) was a rotating light assembly mounted atop a tower. These were once used extensively in the United States for visual navigation by airplane pilots along a specified airway corridor .

  6. Transcontinental Airway System - Wikipedia

    en.wikipedia.org/wiki/Transcontinental_Airway_System

    Light, tower, shed, and concrete arrow. The lighted Airway Beacons were a substantial navigation aid in an era prior to the development of radio navigation. However, their effectiveness was limited by visibility and weather conditions. 24 inches (610 mm) diameter rotating beacons were mounted on 53-foot (16 m) high towers, and spaced ten miles ...

  7. Striplight - Wikipedia

    en.wikipedia.org/wiki/Striplight

    A strip light is a multi-circuit stage lighting instrument. [1] Striplights are one of the most basic types of lighting fixtures available. They usually consist of row of lamps. A single striplight is usually wired internally into either three or four circuits. Each internal circuit consists of several lamps evenly spaced within the unit.

  8. Botts' dots - Wikipedia

    en.wikipedia.org/wiki/Botts'_dots

    Today, there are more than 25 million Botts' dots in use in California, [6] though they have started falling out of favor. In 2017, Caltrans announced that it would stop using Botts' dots as the sole indicator of lane division, due to cost and worker safety, and in order to make roadways more compatible with self-driving cars.

  9. Moiré pattern - Wikipedia

    en.wikipedia.org/wiki/Moiré_pattern

    An interactive example of various moiré patterns Archived 2011-07-24 at the Wayback Machine Use arrow keys and mouse to manipulate layers. A universal moiré effect and application in X-ray phase-contrast imaging "The Moiré Effect Lights That Guide Ships Home", an article on YouTube by Tom Scott about the Moiré Inogon light in Southampton