Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 67
appreciable when it i- with-drawn only a few inches away. In the• piartz tube lamp, on the other handonly i- the fluorescence at close q imuch more vivid, but the effect -till gists when the uranium g -withdrawn a distance of severalThis experiment also - indicate the development of stable… … Typical Kinema l-l Stand comprising bank of mercury vapour t METAL CEILING ROSES. |\ view of the difficulty of obtainingadequate supplies of porcelain the General Electric <<>.. Ltd.. have intro-duced a metal covered ceiliiiLr rose, witha moulded insulated base. The stampediron cover i-…
Lighting
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