What people are saying - Write a review
We haven't found any reviews in the usual places.
Psychophysical experiments to determine standards
Light vision and buildings
15 other sections not shown
Other editions - View all
angle apparent brightness architect artificial lighting assessment average reflection factor Building Research Station calculation ceiling chart clerestory colour criteria criterion curves daylight factor degree of glare determined direction of viewing effect example experiment experimental field of view flicker fluorescent lamps frequency ft-lamberts give given glare constant glare discomfort glare formula glare source Hopkinson horizontal illumination level indirect component installation interior internal reflected component judgments lamps level of illumination level of supplementary light source lumens lumens/sq measurements method necessary Nomogram observer obstruction obtained overcast sky photocell problem protractor psychophysical pupil diameter range ratio reading relation scale sensation shown sky brightness sky component sky factor sky luminance Snellen chart solid angle source brightness source luminance steradians stimulus supplementary lighting surface surround brightness Table tion uncomfortable variable visual acuity visual comfort visual field visual task wall window