Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 225
nches deep and 19 incheswide, parallel to one another as shownby the fine dotted lines in Kg. 23. Thereare cross beams, but these are muchshallower. The lighting is effected by the surfa11- being about two years oldat the time the photometric tests weieTaken. Assuming the coefficient already… … FIG. 23 CEIUfiC AND FLOOR PLfiH OF ROOM FORMANUAL TRAINING LIT Br IHVERTED ARC LAMPSroor ctrtDits iLLUMin»Tio* On atncitt 1»ln rtiTWf CilKLlS four inverted arc lamps fixed on themain beams and -~> inches In-low them, attin- centres shown. The walls are !with a dark brown glazed brick reachingto…
Lighting
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
