Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 248
ance to daylight.The booklet also illustrates the applica-tion of the Anti-Break anti-vibrationdiscs, which consist of concentric rings ofspringy phosphor-bronze and gauze,whereby shocks and vibrations areabsorbed and prevented from affectingthe filament. G.E.C. TURBO-PLANT. We have received from… … Illustrating the effect of metal reflectors which arc apt to leave the top of theroom in comparative darkness unless supplementary general illumination isprovided.
Lighting
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