Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 368
ell as a considerable diminutionin consumption of electricity has beenseciued. The horizontal ilhunination inthe main hall is given as 2 ft.-candlesmaxiniiun, with a minunum of 17 ft.-candles, while along the platforms thevariation lies between 08 and 1*6 ft.-candles. Messrs. Siemens Bros. Dynamo…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
