The lighting book; a manual for the layman, setting forth the practical and esthetic sides of good lighting for the home (1913)
Godinez, F. Laurent · New York, McBride, Nast & company · leaf 35
THE MISUSE OF LIGHT ij power per square inch, down to 0.2 to o.i candle-power per square inch as a minimum, are safeworking standards for the eye. While no absoluterule can be laid down, owing to individually dif-ferent requirements, there is one positive methodof determining whether or not the…
Lighting
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