Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 176
l varied from by inverted low-pressure burners, whichare fitted with a system of electric igni-tion, and can be controlled from distantpoints, and from more than one ifrequired. The small electric currentnecessary for the purpose is suppliedby a 6-volt dry cell battery, and themere pressing of an… … Fig. 11.—Interior of Druggists Store (Messrs. Heppells), Straud. 11-2 to 13-8 foot-candles; while theillumination on the joints of meathanging on the top rails outside theshop was 76 to 80 foot-candles ; andthat on the counter inside the shop was10-6 to 10-9 foot-candles. Observa-tions on the…
Lighting
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