Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 91
series of test exposures to give themost perfect rendering of the wholerange of colours. A pure white testsurface (not shown m the reproduc-tions) was also included within thelimits of each plate, and it may bestated as instancing the remarkablyuniform effect of theesposures, that therelationship…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
