Abstract :
“One of the most important tools necessary to plants directly or indirectly affiliated with the national defense program is good and sufficient lighting.” So states Plant Engineer Edward C. Bertram of North American Aviation, Inc., in an article “Vital Need of Modern Lighting in Industry” published in The Magazine of Light, issue number 4, 1941. Representative of the lighting intensities used in Mr. Bertram´s plant, the following are reported:
