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Health effects of sunlight exposure. Exposing skin to the ultraviolet radiation in sunlight has both positive and negative health effects. On the positive side, exposure allows for the synthesis of vitamin D 3. Vitamin D has been suggested as having a wide range of positive health effects, which include strengthening bones [ 1] and possibly ...
Computer vision syndrome. Computer vision syndrome ( CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time and the eye's muscles being unable to recover from the constant tension required to maintain focus on a close object.
Optimism is a choice. Kindness is a choice." – Roy T. Bennett , "The Light in the Heart". "Remember, there’s no such thing as a small act of kindness. Every act creates a ripple with no ...
Fluorescent lamps with magnetic ballasts flicker at a normally unnoticeable frequency of 100 or 120 Hz (twice of the utility frequency; the lamp is lit on both the positive and negative half-wave of a cycle). This flickering can cause problems for some individuals with light sensitivity [ 1] and are associated with headaches and eyestrain.
July 25, 2024 at 1:09 AM. Robbie Ray returned to the mound Wednesday for the first time in more than a year. Although his strange no-hitter bid came up short, Ray successfully led the San ...
Palep herself was quite concerned with the dosage of the light therapy provided by the masks, as not every patient may require the same amount and duration of the treatment. "The potential dangers ...
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Synopsis. Everyone in a king's country had to say "To your good health!" whenever he sneezed, but a shepherd with the staring eyes would not say it. The king summoned him and demanded it, but the shepherd would only say, "To my good health." The chamberlain told him he would be killed if he did not, and the shepherd said that he would say it ...