Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 264
that for a distance of 6 ft.or 8 ft. in any direction from thespot chosen there was no appreciabledifference in the illumination. Five orsix lamps contributed to the illumina-tion, and there was httle difficulty infinding a position in which the observersbody did not cast a shadow on thephotometer.… … Fig. 2.—Part of St. Janit-s S(niarc. a daik-coloured one, the street lampsare closer together in front of theformer, and a good deal of light wasemitted by the lamp over the door andfrom the M-indows. Fig. 2 shows thepositions of the first four sets of mea-surements, A, B, C, and D. Tlie lighting…
Lighting
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