Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 314
t air inthe upper part of the lantern.and yet to provide a suit-ably weather - proof con-struction. Two patterns ofthe lantern, one with a spunsteel reflector, weighing 21|lbs. for general use. theother of more massive con-struction for use in exposedpositions, weighing 35 lbs. We understand that… … Fig. 2.—Distribution of light from City Street-Lighting Lantern. 304 THE ILLUMINATING ENGINEER (oct. 1919) PROGRESS IN ELECTRIC INCANDESCENT LAMP SUPPLY IN THE UNITED STATES. Some time ago we referred tosome interesting statistics pub-lished in the General ElectricReview (I.K.A.) relating to…
Lighting
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