Some recent problems in library illumination engineering

Abstract

Investigations are concentrated on three problems of high actuality:
First the problem of using fluorescent lamps as against conventional incandescent lamps, with emphsis on the suitabillty of fluorescent lighting to replace natural light. This fact permits provision for extensive flexibility in library building design. Psychological and physiological effects of fluorescent lighting are also studied. The second problem is represented by the studied. The second problem is represented by the relationship between genaral and local illumination, respectively, in modern library space. The author's opinion is in favour of general lighting. The third problem studied concerns the luminous flux in different library spaces and premises. The relevant statements of library literature are cited, suggestions are made concerning the luminous intensity (flux) of individual rooms and premises stressing the extremely rapid rate progress in this field and, consequently, the responsibillty of librarians to design library illumination installations in such a manner so as to make it satisfy present requirements as well as ensure, without significant modifications, increased future luminous intensity in a simple and economic way.