種々の照度における児童の作業能率および疲労について

概要

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An experimental study was carried out for the purpose of investigating the effect of illumination upon the work efficiency and fatigue. A boy and a girl of 8 years of age served as subjects, and the experimental work (caucellation of specified letters in the test papers) was made for 40 minutes under various illumination levels. Regarding fatigue, determination of critical flicker fusion frequency and esthesiometry were made before and after the work.Attention was also paid upon the subjective symptoms after the work.Results:1) The work efficiency was highest in the range from 100 to 1, 000lx.2) Taking the out put curve and the results of flicker-test and eathesiometry into consideration, the fatigue seemed to be slightest in the above mentioned range.3) Lower illumination level, especially under 8lx, caused marked decline of efficiency and noticeable fatigue.4) There was noted a tendency of decrease in efficiency at the illumination level as high as 3, 000lx although the children ware rather satisfied with that level.
日本衛生学会の論文