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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 ...
Dawn simulation generally uses light sources that range in illuminance from 100 to 300 lux, while bright light boxes are usually in the 10,000-lux range. Approximately 19% [4] of patients discontinue post-awakening bright light therapy due to inconvenience. Because the entire treatment is complete before awakening, dawn simulation may be a more ...
The device can reproduce direct light at any location on Earth. [4] After the 2000s, Prof. Norbert Lechner, an architect, LEED AP and an expert in energy responsive architecture has invented a manual Sun Emulator Heliodon. [5] He invented heliodons which were much easier to evaluate daylight simulation than the previous models. [5]
Laboratory class AAA solar simulator. A solar simulator (also artificial sun or sunlight simulator) is a device that provides illumination approximating natural sunlight.The purpose of the solar simulator is to provide a controllable indoor test facility under laboratory conditions.
The artificial sky is a daylight simulation device that replicates the light coming from the sky dome. An architectural scale model or 1:1 full-scaled aircraft is placed under an artificial sky to predict daylight penetration within buildings or aircraft that subjects to different situations, complex geometries, or heavily obstructed windows.
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.
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