G. Cook

The perception of lighting quality in a non‐uniformly lit office environment

This paper presents the views of 16 fully sighted people who carried out typical office tasks under eight different lighting systems. This work is taken from a much larger study, primarily involved with the lighting of office tasks for visually impaired people. Non‐parametric statistical tests show there are significant differences of opinion about the different lighting systems in terms of adequacy and comfort. Whilst there is a general trend in the results which suggest that increasing task illuminance and wall illuminance is preferred by the test subjects, other issues are identified which can influence aspects of lighting quality.

Artificial lighting in classrooms—results of a lighting survey

Abstract This paper summarises the results of a survey to determine the provision of artificial lighting in 59 classrooms. The rooms are sited in five different teaching institutions. Details of the survey equipment, and the methods of illuminance and luminance measurement are described. The measured values show that a wide variation exists between rooms. The results of the survey are compared to the illuminance and glare recommendations in three different artificial lighting design codes. Many of the classrooms fail to meet the minimum requirements of these guides. A need for further work to establish the causes of these deficiencies is identified.