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During this century, we have begun to replace sunlight with artificial lighting. Since light contains the total electromagnetic spectrum under which most of all life on Earth has evolved, this very recent move away from natural light may not be a very wise move. ...
The deficiencies of artificial light started to be examined in the middle of the last century by John Ott. He filmed cells under natural light and cells under filtered incandescent(Emitting visible light as a result of being heated) light. The chloroplasts under the natural light followed an orderly, stream-like pattern within the cells. Under the incandescent light, the chloroplasts fell out of order and clumped together at the corners of the cells. When Ott added long-wave length ultraviolet to the microscope light, all of the chloroplasts returned to their orderly pattern. This suggests that we can, to some extent, mimic sun light.
To again show the importance of sun light read this - Sun light effectively treats psoriasis (the National Psoriasis Foundation reports that 80% of people suffering from skin conditions improve when exposed to sun light), sun light increases heart efficiency, reduces cholesterol, treats many diseases including tuberculosis, and even helps in weight loss.
Approximate Word count = 991
Approximate Pages = 4
(250 words per page double spaced)
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