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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 ...
This category is most often used for low intensity testing, from less than 1 sun up to several suns. The total integrated irradiance for the AM1.5G spectrum is 1000.4 (280 nm to 4000 nm bandwidth) [23] which is often referred to as ‘1 sun’. Continuous light (or Continuous-Wave, CW) solar simulators may have several different lamp types ...
Dawn simulation is a technique that involves timing a light, often called a wake-up light, sunrise alarm clock, or natural light alarm clock, in the bedroom to come on gradually, over a period of 30 minutes to 2 hours, before awakening to simulate dawn.
#13 LED Light Bulbs Fireflies help make LED light bulbs more efficient. The bugs' lanterns have microstructures, or asymmetrical microscopic projections, that release light.
15 kW xenon short-arc lamp used in IMAX projectors High-speed, slow-motion video of a xenon flashtube recorded at a speed of 44,025 frames per second.. A xenon arc lamp is a highly specialized type of gas discharge lamp, an electric light that produces light by passing electricity through ionized xenon gas at high pressure.
Sunlight contains a small amount of light in the 290-300 nanometer range, which is essential for vitamin D synthesis. This is why 15 to 30 minutes of daily sun exposure is usually recommended. In Northern European countries, especially during winter when sunlight is limited, pregnant women may receive UVB light therapy in clinics to ensure ...
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