Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 332
Fig. 1. -General view ofCeag pillarless miners lamp. 90* !OQ* … 290 280* 270* 260 Fig. 2.—Polar curve of horizontal light distribution of Ceag pillarless lamp,compared against Standard miners lamp. 304 THE ILLUMINATING ENGINEER (nov.-djsc. 1922) THE BLINKING EFFECT OF NEONGASFILLED LAMPS. An experiment was shown by Mr. 8. 0.Pearson in which a Neon tube and…
Lighting
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