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THE EFFECT OF ILLUMINATION ON II
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activities acuity amount of light areas ballast brain cent characteristics ciliary muscle circuit color contrast daylight decibel desian dimmers dimming direct effect Electric emit factors flexibility flourescent fluorescent fluorescent lamps footcandles function glare human performance Ibid Illuminating Engineering illumination level important impressions incandescent increase installed intensity involves John Flynn lamps lens level of illumination Liahting light source light waves Lightina lighting design lighting environment lighting system liqht luminaires muscular fatigue nanometers nonuniform lighting object offending zone office landscape optimum output OVERHEAD Perception Perimeter Lighting photons physiological and psychological R.G. Hopkinson R.L. Gregory radiant energy receptors reduced result retina Rubin Vase sensitivity stimulation surface switch TASK LIGHTING uniform lighting variations veiling reflections visibility vision visual acuity visual comfort visual environment visual fatigue visual field Visual Perception visual performance visual system visual task wavelengths