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  2. Floodlight - Wikipedia

    en.wikipedia.org/wiki/Floodlight

    The most common type of floodlight was the metal-halide lamp, which emits a bright white light (typically 75–100 lumens/Watt). Sodium-vapor lamps are also commonly used for sporting events, as they have a very high lumen to watt ratio (typically 80–140 lumens/Watt), making them a cost-effective choice when certain lux levels must be provided. [4]

  3. Acuity Brands - Wikipedia

    en.wikipedia.org/wiki/Acuity_Brands

    Acuity Brands, Inc. is a lighting and building management firm headquartered in Atlanta, Georgia, with operations throughout North America and in Europe and Asia.As of 2024 the company has approximately 12,000 employees and recorded net sales of $3.84 billion for the fiscal year. [4]

  4. Lithonia, Georgia - Wikipedia

    en.wikipedia.org/wiki/Lithonia,_Georgia

    Lithonia is in the heart of the Georgian granite-quarrying and viewing region, hence the name of the town, from the Greek lithos, for “stone”. [4] The huge nearby Stone Mountain is composed of granite, while the Lithonia gneiss is a form of metamorphic rock. The Stone Mountain granite is younger than, and has intruded the Lithonia gneiss ...

  5. Luminous efficacy - Wikipedia

    en.wikipedia.org/wiki/Luminous_efficacy

    The former sense is sometimes called luminous efficacy of radiation, [4] and the latter luminous efficacy of a light source [5] or overall luminous efficacy. [ 6 ] [ 7 ] Not all wavelengths of light are equally visible, or equally effective at stimulating human vision, due to the spectral sensitivity of the human eye ; radiation in the infrared ...

  6. Metro Atlanta - Wikipedia

    en.wikipedia.org/wiki/Metro_Atlanta

    Metro Atlanta, designated by the United States Office of Management and Budget as the Atlanta–Sandy Springs–Roswell metropolitan statistical area, is the most populous metropolitan statistical area in the U.S. state of Georgia and the sixth-largest in the United States, based on the July 1, 2023 metropolitan area population estimates from the U.S. Census Bureau.