Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 147
pplied by the makers, will,it is hoped, serve as a guide to recent commercial developments, and we welcome the receipt of allbona-fide information relating thereto.] ARTIFICIAL DAYLIGHT. The new B.T.-H. Trutintmatching Unit. Colour- The accompanying illustrations will givean idea of two tonus of… … special glass correcting screen is theresult of very careful research and thata very close resemblance to normaldaylight is obtained. As readers areaware from previous notes in this Journal,artificial daylight is now receiving muchattention and has proved of great valuein such processes as dyeing,…
Lighting
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