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2. Artificial sunlight - Wikipedia

   en.wikipedia.org/wiki/Artificial_sunlight

   Artificial sunlight is useful in treating and preventing seasonal affective disorder (also known as winter depression, which causes depression symptoms specifically in winter), [3] and delayed sleep phase syndrome, in which the circadian rhythm (the rhythmic alternation between daylight and nighttime behavior and bodily states) is disturbed and the person falls asleep much later than he or she ...

3. Orders of magnitude (illuminance) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude...

   Shade illuminated by entire clear blue sky, midday 10 5: 100 kilolux 110 kilolux: Bright sunlight ... Frosted incandescent light bulb [5] [6] [12] 10 6: Mcd/m 2: 600 ...

4. Solar simulator - Wikipedia

   en.wikipedia.org/wiki/Solar_simulator

   The first type is a familiar form of light source in which illumination is continuous in time, also known as steady-state. The specifications discussed in the previous sections most directly relate to this type of solar simulator. This category is most often used for low intensity testing, from less than 1 sun up to several suns.

5. The 11 Best Sun Lamps That Aim to Boost Your Mood ... - AOL

   www.aol.com/10-best-sunlamps-boost-mood...

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6. Light therapy - Wikipedia

   en.wikipedia.org/wiki/Light_therapy

   Light therapy, also called phototherapy or bright light therapy is the exposure to direct sunlight or artificial light at controlled wavelengths in order to treat a variety of medical disorders, including seasonal affective disorder (SAD), circadian rhythm sleep-wake disorders, cancers, neonatal jaundice, and skin wound infections.

7. Halogen lamp - Wikipedia

   en.wikipedia.org/wiki/Halogen_lamp

   Like all incandescent light bulbs, a halogen lamp produces a continuous spectrum of light, from near ultraviolet to deep into the infrared. [23] Since the lamp filament can operate at a higher temperature than a non-halogen lamp, the spectrum is shifted toward blue, producing light with a higher effective color temperature and higher power ...