Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 89
. I l.—Ailju.-iatile pendant. uAun -J o !■. ft.of gas per hour. A recent test showed thatthe illumination 2 ft. below the burnerwas (J foot-candles. turns it on again in the evening whenthe light begins to fail. This is accom-plished by the unequal expansion oftwo sets of rods—one pohslied and 76… … Fig. 12.—Tortable lamp with silk shade(lined white inside). The height ofburner (consuming | ciilj. ft. per hour)from table is about 18 inches and asmuch as lo ft.-candles is obtained belowthe lamp. It has been found that in the caseof important stations the system ofsignals has become so…
Lighting
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