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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 ...
These bulbs replicate the portion of the sun's spectrum that is responsible for Vitamin D3 synthesis. [7] In September 2020, PETA, a US animal rights organization, filed a lawsuit against the company, claiming that the business encourages consumers to buy enclosures that could be harmful to snakes. [8]
This closely matches the color of sunlight (but not skylight), because the Sun's surface is a 6000 K blackbody radiator. With HMI bulbs, color temperature varies significantly with lamp age. A new bulb generally will output at a color temperature close to 15,000 K during its first few hours.
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 ...
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 ...
The use of full spectrum lighting assists aquarium plants to grow and aids in the health of the fish and the tank as a whole. While plants have adapted to the reception of real sunlight, full spectrum light bulbs often mimic the emphasis of wavelengths of sunlight enough that plants are stimulated to grow.