Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 163
band refractor to insure the properdistribution of the light. It is surelytime that street lighting equipment 152 THE ILLUMINATING ENGINEER (juke 1919) should be made more ornamental and lessobtrusive. Industrial Lighting. The war has given a great impetus toindustrial lighting. It is in this… … Fig. 17.—Types of industrial lighting unitsfor gas-filled lamps. The fittings shown areof vitreous enamelled steel. (See Fig. 20for polar curves.) The requirements for industrial lightingin factories and nulls are now providedfor by legislative codes in various partsof the United States. Similar…
Lighting
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