Data on Artificial Lighting: Supplementary to Section II of "Scientific Offices Management"

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A.W. Shaw Company, 1917 - Lighting - 6 pages
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Page 6 - A part of the light is transmitted directly to the eye through the translucent reflector placed beneath, and a part is reflected to the ceiling. Thus, depending upon the density of the reflector, this type of system may vary between the totally direct and...
Page 6 - ... illumination ordinarily used or at an intensity great enough for all kinds of work, little advantage seems to be gained for the eye for reflectors of low and medium density ; for with these intensities of light and densities of reflector the brightness of the source has not been sufficiently reduced to give much relief to the suffering eye. Until this is done in home, office and public lighting, we cannot hope to get rid of eye strain with its complex train of physical and mental disturbances....

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