Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 308
er,and the flood and lens stage arc lamps. Another novelty wasthe exhibition of aspecial concentrated fila-ment Mazda lamp. Thisis made in three sizesfor 50, 100, and 200watts, and in voltagesranging from 12-100.Th(i filament is madeof drawn tungsten wire,wound in a very narrowspiral, and… … XIV TEE ILLUMINATING ENGINEER LIGHT AND ILLUMINATION Their Use and Misuse {^Reprintedf70)n TiiE Illuminating Engineer, Deccvibcr, 1912.) A FEW GENERAL RECOMMENDATIONS ON LIGHTING Single copies are available at a cost of id. each. Larger numbers forpropaganda purposes can be obtained at reduced…
Lighting
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