Electric lighting of buildings

Part 1 of the paper emphasizes the relationship between modern lighting design and contemporary practice in architecture and decoration, due to the use of new constructionalmethods and materials. Various forms oflighting are described briefly, and instances are given, leading up to the more recent influence that lighting by electricity is bringing to bear on modern architectural form. Part 2 deals with the characteristics of modern electric light sources and of the materials used in modern lighting, particularly diffusing glass of various kinds. The visual factors entering into lighting problems are then discussed, with particular reference toglare and its avoidance. The necessity for adequate contrasts, the proper utilization of shadows, and the importance of colour in lighting, are dealt with in the concludingparagraphs of the paper.