Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 12
91, 123, 149, 201, 227, 251, 277, 207 Triangulation Signal Lamp, A New .. 264 Tungsten, Reflecting Power of .. ... 296 Tungsten, Ductile Properties of .. .. 300 U Underground Pa.ssages, A New Mcthoil of Lighting .. .. .. .. .. 237 Visible and Invisible Light, Separation of 295Visible Air-raid… … THE JOURNAL OF SCIENTIFICILLUMINATION. OFFICIAL OKOA>r OF THE ^llumiuattnG lEnoineerinG Society. (Founded in London, 1909.) ILLUMINATING ENGINEERING PUBLISHING COMPANY LTD32. VICTORIA STREET, LONDON S.W. Tel. No. 5215 Victoria. EDITORIAL. Progress in 1916. It is customary, at the beginning of a…
Lighting
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