Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 351
Fig. 1—By daylight. Fig. 2.—By artificial light. Conditions of illumination in a Streatham \vork;hop devoted to sewing. It is generally agreed that one of themost important factors in good industriallighting is the arrangement of shadows.In this respect, probably, artificial lightis almost…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
