Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 600
Diffusing Reflector. Sufficient light shed on thesurroundings, but strongest illu-mination underneath lamp. Sourceof light now screened from the eyesby translucent reflector. … Concentrating Reflector. Nearly all the light throwndownwards, and upper part of roomin comparative darkness. Source oflight completely screened from theeyes by opaque reflector.
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
