Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 86
e use of a special room capableof being darkened at will and contain-ing a series of chambers or compart-ments each suitably lighted by oneof the different illuminants, ^^•hicharrangement although excellent inother respects necessitates the attend-ance of the interested party at thedemonstration,… … Fig. 1a. — ■ Coltru Colour-Matching ArcLamp, with Cover (carrying Filter Screen,removed. the improved methods and appli-ances now available, such changescould not be recorded photographicallywith the requisite accuracy and .subse-quently reproduced, and the resultswliich follow are the outcome of…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
![An illustration from How to plan, finance and build your home [by] the Architects’ small house service bureau. (1922)](https://img.insideoutlibrary.com/img/200/ia-howtoplanfinance00arch-95-241.webp)
![An illustration from Common objects of the microscope [electronic resource] (1900)](https://img.insideoutlibrary.com/img/200/ia-49492157.2969.emory.edu-218-44.webp)
