Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 252
The most interesting part of this pro-position was the necessity for colourmatching ; the buyers stating that it wasimpossible to match colours, particularlyin silky materials, by artificial lighting.In order to deal with this problem, experi-ments were carried out with six differenttypes of arc… … coefficient was 2-3, and he obtained it inexactly the same way as Mr. Clinton hadillustrated in the paper. He showed anumber of slides illustrating this indirectlighting installation. The lamps werehung 2 ft. 6 in. from the ceiling in rooms11 ft. 6 in. high, and 3 ft. from the ceilingin rooms 13…
Lighting
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