Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 186
Fig. 6.—Lighting Operating Table by Converging Rays from Mirrors (Prof, Seidentopf). … Fig. 7.—Seidentopf System of Lighting Operating Tables showing direction of rays. 170 THE ILLUMINATING ENGINEER (juxe 1922) intolerable heat on his head. The surgeoncan, of course, always use an electric fore-head light, but one expects that to benecessary only in special circumstances,as the…
Lighting
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