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2. Tanning lamp - Wikipedia

   en.wikipedia.org/wiki/Tanning_lamp

   Unfiltered light from a high-pressure lamp is rich in UVC used in germicidal lamps, for water purification, but it damages human skin. The contents of a high-pressure lamp are inert gas (such as argon) and mercury. [2] There are no phosphors used, and the mercury is clearly visible if it is not in a gaseous state.

3. Grow light - Wikipedia

   en.wikipedia.org/wiki/Grow_light

   Ficus plant grown under a white LED grow light. A grow light is an electric light that can help plants grow. Grow lights either attempt to provide a light spectrum similar to that of the sun, or to provide a spectrum that is more tailored to the needs of the plants being cultivated (typically a varying combination of red and blue light, which generally appears pink to purple to the human eye).

4. Hydrargyrum medium-arc iodide lamp - Wikipedia

   en.wikipedia.org/wiki/Hydrargyrum_medium-arc...

   An 18kW HMI Bulb An HMI lamp uses mercury vapour mixed with metal halides in a quartz -glass envelope, with two tungsten electrodes of medium arc separation. Unlike traditional lighting units using incandescent light bulbs , HMIs need electrical ballasts , which are separated from the head via a header cable, to limit current and supply the ...

5. Trump rolls back standards for water-using appliances, light ...

   www.aol.com/news/trump-rolls-back-standards...

   WASHINGTON (Reuters) -President Donald Trump on Tuesday moved to revert to older standards for light bulbs as well as toilets, showers and other water-using appliances, a day after signing an ...

6. Nonprofit and corporate effort to put safety info on ... - AOL

   www.aol.com/news/2010-10-13-nonprofit-and...

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7. 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 ...