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  2. Dark therapy - Wikipedia

    en.wikipedia.org/wiki/Dark_therapy

    Dark therapy is the practice of keeping people in complete darkness for extended periods of time in an attempt to treat psychological conditions.The human body produces the melatonin hormone, which is responsible for supporting the circadian rhythms.

  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. Circadian rhythm - Wikipedia

    en.wikipedia.org/wiki/Circadian_rhythm

    A circadian rhythm (/ s ər ˈ k eɪ d i ə n /), or circadian cycle, is a natural oscillation that repeats roughly every 24 hours.Circadian rhythms can refer to any process that originates within an organism (i.e., endogenous) and responds to the environment (is entrained by the environment).

  5. Time dilation - Wikipedia

    en.wikipedia.org/wiki/Time_dilation

    Transversal time dilation. The blue dots represent a pulse of light. Each pair of dots with light "bouncing" between them is a clock. In the frame of each group of clocks, the other group is measured to tick more slowly, because the moving clock's light pulse has to travel a larger distance than the stationary clock's light pulse.

  6. Bili light - Wikipedia

    en.wikipedia.org/wiki/Bili_light

    The light pad is usually placed on the undressed baby's back with a diaper on. Clothing may be worn, but the clothing should be placed over the light pad, and the light pad should still be in direct contact with the baby's skin. The light pad should never be placed on the baby's head. [11] The baby can sleep, eat, or be held while the light pad ...

  7. Lead poisoning - Wikipedia

    en.wikipedia.org/wiki/Lead_poisoning

    ] Fatigue, problems with sleep, headaches, stupor, slurred speech, and anemia are also found in chronic lead poisoning. [32] A "lead hue" of the skin with pallor and/or lividity is another feature. [40] [41] A blue line along the gum with bluish black edging to the teeth, known as a Burton line, is another indication of chronic lead poisoning. [42]

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