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  2. Dark windows on your car? Be careful parking in Philly - AOL

    www.aol.com/dark-windows-car-careful-parking...

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  3. Fluorescent lamps and health - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_lamps_and_health

    An open (single envelope) CFL [12] An encapsulated/closed (double envelope) CFL. Some fluorescent lamps emit ultraviolet radiation. [citation needed] The Health Protection Agency of the United Kingdom has conducted research concluding that exposure to open (single envelope) compact fluorescent lamps (CFLs) for over 1 hour per day at a distance of less than 30 cm can exceed guideline levels as ...

  4. Task lighting - Wikipedia

    en.wikipedia.org/wiki/Task_lighting

    Localized lighting consists of a luminaire that provides ambient light as well as task light. Often it is an uplighter with a light source that is directed downward. It is intended to be mounted immediately over the workplace, and it can be either hung from the ceiling, mounted on the desk or a dividing wall, or it can be a free-standing floor ...

  5. Stroboscopic effect - Wikipedia

    en.wikipedia.org/wiki/Stroboscopic_effect

    Intentional light variations are applied for warning, signalling (e.g. traffic-light signalling, flashing aviation light signals), entertainment (like stage lighting) with the purpose that flicker is perceived by people. Generally, the light output of lighting equipment may also have residual unintentional light level modulations due to the ...

  6. Nightlight - Wikipedia

    en.wikipedia.org/wiki/Nightlight

    People usually use nightlights for the sense of security which having a light on provides, or to relieve fear of the dark, especially in young children.Nightlights are also useful to the general public by revealing the general layout of a room without requiring a major light to be switched on, for avoiding tripping over stairs, obstacles, or pets, or to mark an emergency exit.

  7. Home safety - Wikipedia

    en.wikipedia.org/wiki/Home_safety

    Falling accidents at home are very common and can cause serious and life-threatening injuries, so prevention of slip and trip accidents is essential in the good design of living quarters. This objective is especially important for the elderly and disabled, who may have restricted movement and be more susceptible to hazards .

  8. Ergonomic hazard - Wikipedia

    en.wikipedia.org/wiki/Ergonomic_hazard

    Whenever there is a worker and a job, there will be ergonomic considerations. Commonly, ergonomic issues can arise in an office setting. [12] [13] Many people who work in an office (either a home office or a formal office building) often spend hours sitting and working in the same position. Ergonomic considerations include chair and computer ...

  9. Street light interference phenomenon - Wikipedia

    en.wikipedia.org/wiki/Street_light_interference...

    A street lamp mounted on a bracket and column A high pressure sodium street light fixture. Street light interference, sometimes called high voltage syndrome, is the claimed ability of individuals to turn street lights or outside building security lights on or off when passing near them. [1]