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  2. Maglite - Wikipedia

    en.wikipedia.org/wiki/Maglite

    Originally Maglite flashlights used krypton or xenon incandescent bulbs. Current models have LEDs , although the older models are still widely available. Accessories include belt holsters, mounting brackets, colored and glass lenses, attachable fiber optics extensions to bend light output into a cramped space, higher-powered incandescent bulbs ...

  3. Standard illuminant - Wikipedia

    en.wikipedia.org/wiki/Standard_illuminant

    Illuminants A, B, and C were introduced in 1931, with the intention of respectively representing average incandescent light, direct sunlight, and average daylight. Illuminants D (1967) represent variations of daylight, illuminant E is the equal-energy illuminant, while illuminants F (2004) represent fluorescent lamps of various composition.

  4. Color rendering index - Wikipedia

    en.wikipedia.org/wiki/Color_rendering_index

    Researchers use daylight as the benchmark to which to compare color rendering of electric lights. In 1948, daylight was described as the ideal source of illumination for good color rendering because "it (daylight) displays (1) a great variety of colors, (2) makes it easy to distinguish slight shades of color, and (3) the colors of objects around us obviously look natural".

  5. High-CRI LED lighting - Wikipedia

    en.wikipedia.org/wiki/High-CRI_LED_lighting

    In general terms, CRI is a measure of a light source's ability to show object colors "realistically" or "naturally" compared to a familiar reference source, either incandescent light or sunlight. [2] Efficiently achieving an acceptable CRI has been the most difficult metric for more modern light bulbs attempting to replace older incandescent ...

  6. LED lamp - Wikipedia

    en.wikipedia.org/wiki/LED_lamp

    A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

  7. Spectral power distribution - Wikipedia

    en.wikipedia.org/wiki/Spectral_power_distribution

    Mathematically, for the spectral power distribution of a radiant exitance or irradiance one may write: =where M(λ) is the spectral irradiance (or exitance) of the light (SI units: W/m 2 = kg·m −1 ·s −3); Φ is the radiant flux of the source (SI unit: watt, W); A is the area over which the radiant flux is integrated (SI unit: square meter, m 2); and λ is the wavelength (SI unit: meter, m).

  8. The Maglite ML300L Is the Last Flashlight You'll Ever ... - AOL

    www.aol.com/news/maglite-ml300l-last-flashlight...

    Maglite's ML300 is a long-lasting, super-bright LED flashlight kicks out more than 1,000 lumens and can run for 5 hours on its brightest setting. Maglite's ML300 is a long-lasting, super-bright ...

  9. Luminous intensity - Wikipedia

    en.wikipedia.org/wiki/Luminous_intensity

    Prior to the definition of the candela, a variety of units for luminous intensity were used in various countries. These were typically based on the brightness of the flame from a "standard candle" of defined composition, or the brightness of an incandescent filament of specific design.