Bryn Mawr College monographs . etc., especially for the direct and semi-mdire. systems. An inspection of the chart for loss of efficiency show roughly speaking, a correspondingly marked decrease in loss ( efficiency from Positions I-IV for the systems which show_ tl marked^ decrease in brightness differences, that is, for the dirc^ and semi-indirect systems. The decrease in loss of efficiency 18,1 will be noted, practically nothing for the indirect system. lh| not only much less loss of efficiency is sustained by the eye for tl indirect units used, but the results are much more mdepende) of th
Bryn Mawr College monographs . etc., especially for the direct and semi-mdire. systems. An inspection of the chart for loss of efficiency show roughly speaking, a correspondingly marked decrease in loss ( efficiency from Positions I-IV for the systems which show_ tl marked^ decrease in brightness differences, that is, for the dirc^ and semi-indirect systems. The decrease in loss of efficiency 18,1 will be noted, practically nothing for the indirect system. lh| not only much less loss of efficiency is sustained by the eye for tl indirect units used, but the results are much more mdepende) of the position of the observer in the room. ^ j The comparative effects on the eye for the four positions m tl room are shown in Chart III. Efficiency of Eye and Lighting. CHART III.—DISTRIBUTION the effect on loss of visual efficiency of varying the ob-server s position in the room, or the number of bright sources primaryand secondary, in the field of vision. i^«^, primary POSITION I^UWT nXT WLS IN FIELD Of mxW. POSITION II
Size: 1425px × 1754px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbrynmawr, bookcentury1900, bookdecade1900, bookyear1901
