Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 84
lighted sheds all-porcelain lamp-holders have been foundvery satisfactory in withstanding thecorrosive effect of sulphurous fumes. Subways, Booking Offices, Etc. Requirement* in Subway Lighting. Uniformity is quite as important insubway lighting as it is on platforms,and all the measurements of… … pJG, 8.—View of subway by artificial liyht.showing effect of placing lamps bet woe nbeams on ceiling. or two lamps out of the whole row . Fig. 8is a view taken by artificial lighl of thesubway in question. 74 THE ILLUMINATING ENGINEER (march. 1919) Mixture of Natural and Artificialbight, It has…
Lighting
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