Data On Artificial Lighting Supplementary to Section Ii of Scientific Offices

Aw Shaw Company

The book Data On Artificial Lighting Supplementary to Section Ii of Scientific Offices was written by author Aw Shaw Company Here you can read free online of Data On Artificial Lighting Supplementary to Section Ii of Scientific Offices book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Data On Artificial Lighting Supplementary to Section Ii of Scientific Offices a good or bad book?

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Here then we have a combination of paraial visual paralysis, optic fatigue, general discomfort and distraction from the work in hand, with all the physical and mental ills and the inefficiencies following in their train. Evidently the physiological effects of lighting are very practical fac- tors in illumination, quite as practical as the immediate dollars-and-cents considerations which are more easily sensed.
It must be apparent that scientific and therefore eco- nomic lighting not only provid...es a sufficiency of light flux, steady and so distributed as to avoid obscurity and deep shadows anywhere within the ordinary range of the workers' eyes, but takes care that the source of illumination, if considerably concentrated as in the case in most lighting units now in use, shall be concealed, enclosed in a diffusing envelope, or placed outside the range of vision . Unless at such a distance that the brilliancy is greatly reduced before the rays reach the eye. Otherwise the main purpose of lighting is defeated, and the workers themselves are physi- cally harmed and are rendered less efficient for their work.

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