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  2. BBB Reveals America's Most Complained-About Businesses - AOL

    www.aol.com/news/2012-03-02-bbb-reveals-americas...

    Topping the complaint list were cell-phone companies, with 38,420 complaints, up 41% over 2010. After that, the list includes (in order of number of gripes): new-car dealers

  3. Recessed light - Wikipedia

    en.wikipedia.org/wiki/Recessed_light

    Different types of recessed lighting in a warehouse "Pot light" or "canister light" implies the hole is circular and the lighting fixture is cylindrical, like a pot or canister. There are three parts to a recessed lighting fixture: housing, trim and bulb. The trim is the visible portion of the light.

  4. Induction lamp - Wikipedia

    en.wikipedia.org/wiki/Induction_lamp

    A number of the core patents were assigned to Ceravision. [10] [11] In 2006, Luxim introduced a projector lamp product trade-named LIFI. The company further extended the technology with light source products in instrument, entertainment, street, area, and architectural lighting applications among others throughout 2007 and 2008.

  5. Parabolic aluminized reflector - Wikipedia

    en.wikipedia.org/wiki/Parabolic_aluminized_reflector

    Between 1940 and 1956, all U.S. cars had to have two 7-inch (178 mm) round headlamps with dual filaments, so each lamp provided both a high and a low beam light distribution. In 1957, a system of four sealed-beam headlamps—two per side, of 5 + 3 / 4 inches (146 mm) diameter, was allowed in some U.S. states. The following year in 1958, all ...

  6. Fluorescent-lamp formats - Wikipedia

    en.wikipedia.org/wiki/Fluorescent-lamp_formats

    3 ⁄ 4: 19.05 Fa8 single-pin; G10q quad-pin; Single-pin fluorescent lamps. Thorn/General Electric 2D fluorescent lamps and other similar lamps from various manufacturers. T8 T26 1 25.4 G13 bi-pin; Fa8 single-pin; R17d recessed double contact; One of the first diameters of fluorescent lamps, with the 15W T8 and 30W T8 having been introduced in ...

  7. Liter of Light - Wikipedia

    en.wikipedia.org/wiki/Liter_of_Light

    Liter of Light Bangladesh was started by Shanjidul Alam Seban Shaan under Lights Foundation in 2015 in Chittagong. [14] [15] They made a local version of the bottle light called 'Botol Bati', which costs around $2–2.50 USD and lasts for 4–5 years. They aim to spread awareness of bottle lights to remote areas by training local school students.