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  2. Fluorescent-lamp formats - Wikipedia

    en.wikipedia.org/wiki/Fluorescent-lamp_formats

    F32T8/25w Retrofit replacement for 4 ft T8 32 W T8 1.0, 25 4 28 F28T8 F32T8/28w Retrofit replacement for 4 ft T8 32 W T8 1.0, 25 4 30 F32T8/ES Retrofit replacement for 4 ft T8 32 W T8: 1.0, 25: 2: 17 F17T8: Ballast-swap replacement for 2 ft T12 20 W T8 1.0, 25 3 25 F25T8 Ballast-swap replacement for 3 ft T12 30 W T8: 1.0, 25: 4: 32 F32T8

  3. Fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_lamp

    Color rendering index (CRI) is an attempt to measure the ability of a light source to reveal the colors of various objects faithfully in comparison to a black body radiator. Colors can be perceived using light from a source, relative to light from a reference source such as daylight or a blackbody of the same color temperature. By definition ...

  4. L Prize - Wikipedia

    en.wikipedia.org/wiki/L_Prize

    The Philips entry met all requirements and, in August 2011, was declared the L-Prize winner in the 60W replacement category. The product became available in the retail market on April 22, 2012 . The lamp was comparable to a 60W incandescent in color quality (CRI = 93, CCT = 2727 K), light distribution, and light output (940 lumens) but consumed ...

  5. Sodium-vapor lamp - Wikipedia

    en.wikipedia.org/wiki/Sodium-vapor_lamp

    In 2017 Philips Lighting, the last manufacturer of LPS lamps, announced they were discontinuing production of the lamps due to falling demand. [15] Initially, production was due to be phased out in the course of 2020, but this date was brought forward and the last lamps were produced at the Hamilton, Scotland factory on December 31, 2019. [16]

  6. Coast Daylight - Wikipedia

    en.wikipedia.org/wiki/Coast_Daylight

    A second train, the Noon Daylight, was introduced on the same route on March 30, 1940; the Coast Daylight became the Morning Daylight. [7] The Noon Daylight was suspended on January 6, 1942, to allow for equipment overhaul. [8] The cut was originally planned to last just several months, but continued due to World War II. [8]