Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 444
or letters intended for inclusion in thecorrespondence cohimns of The Illuminating Engineer. The Editor does not necessarily identify himself with the opinions expressedby his contributors. A New Form of Apparatus for Measuring Illumination. By Prof. S. A. Rumi (Genoa). In these day.s practical… … IM BiG. 3.—Alternative arraniemeiit of jirisms anildevice for measuring horizontal illumination. colour and consumption, &c., and the spot. In this way one can readilycalculation of the combined effect of obtain data which it would be hardlya number of sources, has been carried j^ossible to…
Lighting
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