Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 178
Fig. 12.—Lighting of a Confectioners Sliop witli Interior Lights only. … Fia. 13.—Lighting of the above Shop with Exterior Lights only. 150 THE ILLUMINATING ENGINEER bolic reflectors. For the purpose ofthe experiment the lamps were fixed39 in. out from the vertical surfaceintended to represent a shop front, andthe lighting effects were taken on a ver-tical line directly…
Lighting
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