Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 72
e instance in the report whereindirect lighting seemed to fail, and thatwas where the character of the workdepended upon producing shadows orgraduation of shade as in a self-tonedfabric where the different strands wereonly distinguishable from each other bythis means. Mr. A. CuNNiNGTON (L. & S.… … F^iG. 3.—Wcaviii shed, tieneral illuinination.
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
