- Author
- Collins, B. L. | Dahir, M. S. | Madrzykowski, D.
- Title
- Visibility of Exit Signs in Clear and Smoky Conditions.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Journal
- Journal of the Illuminating Engineering Society, Vol. 21, No. 1, 69-84, Winter 1992
- Keywords
- exit signs | visibility | standards | luminescence
- Abstract
- In the present study, the visibility of several types of internally lit exit signs was assessed under both clear and smoky conditions. In the evaluation both photometric and psychophysical measures were taken.