Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 122
Fig. 2.—Room lii^hted by TuncHolophane seiiii-iiidirect unit. jtcn lamp and … t^napshofc taken at night by the bght of anacetylene Hare. no THE ILLUMINATING ENGINEER. Review of the Technical Press. ILLUMINATION AND PHOTOMETRY. A nimiber of journals celebrate tlienew year by publishing general articleson tln> development of Illuminationduring 1912. The contribution by L.…
Lighting
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