Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 109
ve that someother special types are here listed.Among these are Apostle carbons foropen type arc lamps, Witton carbonsfor enclosed lamps, photographic units,stage arcs, etc., Flame Carbons, and Kinarko carbons which are speciallyadapted to cinematograph work. It is common knowledge that beforethe… … REPORT. Of Test on « Halo Eeflector, For F. Holland, Esq., A.I.E.E., Consulting. Engineer. Measurements were obtained using an ordinary 200 V., 40 W.metallic filament lamp. The value given for any angle represents theaverage c;indle power in all directions round the lower hemisphere of thelamp…
Lighting
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