The daylight factor and actual illuminance ratios
- 1 June 1980
- journal article
- Published by SAGE Publications in Lighting Research & Technology
- Vol. 12 (2) , 64-68
- https://doi.org/10.1177/096032718001200202
Abstract
Measurements of daylight at hourly intervals were made during seven periods of several weeks each between May 1978 and July 1979. Illuminance was recorded externally, on horizontal and vertical surfaces, and internally, within model rooms. It was found that the ratio of internal to external illuminance varied considerably, even under heavily clouded skies.Keywords
This publication has 0 references indexed in Scilit: