Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 353
central high-pressure inverted(80 in. water) gas lamps (2 burner, l,500c.p.).Average distfince apart 104 ft. Generalwidth of street 50 ft. 338 THE ILLUMINATING ENGINEER, The following diagrams give par-ticulars of the illumination derivedfrom various modem illuminants insome of the streets referred… … Fig. 5. Polar Curves of 12i amp. Ori-flamme Lamp (Cheapside). A = With ordi-nary light opale.«cent outer globe. B=Withclear outer globe and a Peard Prismaticreflector. Note the increased intensity atsmall inclinations to the horizontal as aresult of the latter arrangement. • 0 mt- Hi U(N ifbt Lamp.…
Lighting
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