Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 503
ccount of the new formof orthochromatic mercury vapomlamp introduced by the Cooper HewittElectric Co. in the United States, towhose courtesy we are indebted forthe illustrations accompanying thisarticle. colour apparently not far removed fromdaylight could be obtained ; this, atleast, was the… … FlG. 1.—General View of OrthochrouKilic Mercury L.nmp. It will be recalled that Dr. Ives some ance, and Fig. 2 a diagrammatic time ago made a series of experiments scheme of the fixture with the globe on the colour of light derived from on. It will be observed that the combinations of tungsten and…
Lighting
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