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Experimental study of glare from luminous ceiling
Model used was unfurnished room with diffusing luminous ceiling; reflection factors of walls and floor could be altered to give series of room surfaces from all white to all black; procedure used in obtaining subjective judgments from observers; results indicate that ceiling luminance for level of glare equal to mean of criteria just acceptable and just uncomfortable is of order of 150 ft-L with room surfaces of normal reflectances; modifying effect of room surface reflectances is complex, because light surfaces receiving high illumination themselves act as secondary sources of glare.
Experimental study of glare from luminous ceiling
Model used was unfurnished room with diffusing luminous ceiling; reflection factors of walls and floor could be altered to give series of room surfaces from all white to all black; procedure used in obtaining subjective judgments from observers; results indicate that ceiling luminance for level of glare equal to mean of criteria just acceptable and just uncomfortable is of order of 150 ft-L with room surfaces of normal reflectances; modifying effect of room surface reflectances is complex, because light surfaces receiving high illumination themselves act as secondary sources of glare.
Experimental study of glare from luminous ceiling
Illum Eng Soc -- Trans
Hopkinson, R.G. (author) / Collins, W.M. (author)
1963
7 pages
Article (Journal)
English
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