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  2. Fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_lamp

    The spectrum of light emitted from a fluorescent lamp is the combination of light directly emitted by the mercury vapor, and light emitted by the phosphorescent coating. The spectral lines from the mercury emission and the phosphorescence effect give a combined spectral distribution of light that is different from those produced by incandescent ...

  3. Fluorescent lamps and health - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_lamps_and_health

    The abstract further notes that double-walled lamps would reduce UV emissions of concern to sensitive individuals. [15] Self-reporting suggests fluorescent lamps aggravate dyslexia, but tests show that dyslexic patients are unable to detect flicker emanating from light sources. This opinion was updated by SCENIHR in 2012, with no significant ...

  4. Fluorescence - Wikipedia

    en.wikipedia.org/wiki/Fluorescence

    Fluorescent lighting is more energy-efficient than incandescent lighting elements. However, the uneven spectrum of traditional fluorescent lamps may cause certain colors to appear different from when illuminated by incandescent light or daylight. The mercury vapor emission spectrum is dominated by a short-wave UV line at 254 nm (which provides ...

  5. United States lighting energy policy - Wikipedia

    en.wikipedia.org/wiki/United_States_lighting...

    The 2009 IECC requires that 50% of all permanent lamps be high efficacy lighting. The 2009 IECC, chapter 2 defines high efficacy lamps as compact fluorescent lamps, T-8 or smaller diameter linear fluorescent lamps, or lamps with a minimum efficacy of: [21] 60 lumens per watt for lamps > 40 watts,

  6. Standard illuminant - Wikipedia

    en.wikipedia.org/wiki/Standard_illuminant

    F1–F6 "standard" fluorescent lamps consist of two semi-broadband emissions of antimony and manganese activations in calcium halophosphate phosphor. [27] F4 is of particular interest since it was used for calibrating the CIE color rendering index (the CRI formula was chosen such that F4 would have a CRI of 51). F7–F9 are "broadband" (full ...

  7. Compact fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Compact_fluorescent_lamp

    A compact fluorescent lamp (CFL), also called compact fluorescent light, ... Net mercury emissions for CFL and incandescent lamps, based on EPA FAQ sheet, assuming ...

  8. These are the best — and worst — lightbulbs for the planet

    www.aol.com/lifestyle/best-worst-lightbulbs...

    In heat lamps, such as those used for incubators (or the Easy-Bake Oven), heat from the filament is the goal. But anytime a bulb is used for light and not heat, these bulbs are a poor choice.

  9. Phosphor - Wikipedia

    en.wikipedia.org/wiki/Phosphor

    This yellow emission combined with the remaining blue emission gives the "white" light, which can be adjusted to color temperature as warm (yellowish) or cold (bluish) white. The pale yellow emission of the Ce 3+ :YAG can be tuned by substituting the cerium with other rare-earth elements such as terbium and gadolinium and can even be further ...