Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 188
Local VtqttinyjoT Smh Af- Fig. 9.—ConcealedLighting in Recesses. containing two or more powerful half-watt lamps and … Fig. 10.—Marshalls Operating Pendant, with Nernst Projector Tubes, London Hospital. 172 THE [LLUMTNATING ENGINEER (jmre L922) covered with clear glass for easy cleaningas shown in Fig. I I. These should yield25 foot-candles of a beautifully diffusedlighl mi the table. Direct lighting might be made…
Lighting
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
