Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 94
Plan ELEVATION Dtaj^ram of precision artificial eye.L. Light source. A. Adjusting screw 6 Sill .b Point of formation of spectrum. I Prism. C Condensing lenses … 7. Thermopile. D. Spectrum template. C. Galvanometer leads. F^IG. 5.— Inblriiinciil devised to yive Ihc citcct nl Artilicial Kye llvt>(Using prismatic mctluAl.) --^ 100 cm
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
