Journal of the Illuminating Engineering Institute of Japan
Online ISSN : 2185-1506
Print ISSN : 0019-2341
ISSN-L : 0019-2341
On Standard Illumination Intensity of Factory
Gansei Doi
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1929 Volume 13 Issue 2 Pages 129-136

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Abstract
As it is reasonable that illumination intensity at working plane considered referring to the relation between light and fatigue, standard illumination intensity of factory must be agreed upon the working hours. Recent observation of factory illumination in our country and some other investigations on this problem are evidences to this fact.
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