Illumination items: The effect of brigthness on the precision of visually controlled operations

The possibilities of increasing production in industrial plants by the use of better designed lighting equipment and higher intensities of illumination have been proved experimentally and in practise. In general, such changes in the lighting of a factory have been made for the purpose of increasing production. There are many operations, however, where the accuracy with which piece of work can be done is of more importance then the speed, and the advantages of better lighting can be utilized in promoting accuracy rather than in saving time. Of course, this increased accuracy may result in increased production.