Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 221
V S hool Room lighted by low pressure iiu.iiKk-ii.iii u.i- (dired lighting). … VI Workshop lighted by incandescent gas (low pressure). THE ILLUMINATING ENGINEER (aikii.) 207 and over bench D it is bad, due tomantles being out of condition. Bench Dshould get practically constant illumina-tion of a high value if mantles were ingood order. Table XI. Comparison of values in…
Lighting
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