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UV spectra to produce vitamin D

in wiki page and PDF with same title

The vertical access is a log scale, so it is very difficult to get enough vitamin D via skin (dotted line) when the solar zenith angle (SZA) is greater than 75 degrees

The graph also indicates that the amount of vitamin D from UV decreases by 10X when the wavelength is 310 nm and down by 100X (virtually non-existant) when the wavelength is 320 nm


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See also VitaminDWiki


Page last modified on 15 October, 2011


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Health Problems and D

  # of studies as of 8/30/14