Schereschewsky, Joseph Williams, 1873-, Tuck, Davis Henry, 1886-1953, United States. Public Health Service. Public health bulletin no. 71 · Washington, Govt. print. off. · leaf 164
mical unit, which may produce inadequate illumination andalter the distribution characteristics of the reflector. APPENDIXES. APPENDIX A. METHOD OF DETERMINING THE SKY ANGLE AND ANGLE OF GLARE. In Tiew of the part played by the sky-angle value in producmggood natural iUumination, as well as the… … Fig. 1.—Method of determining sky angle of a room. Slcy angle.—The sky angle is determined as follows: Let ^=height of eye of observer from floor. Let (Z = distance of observer from window. Let a = height of lower part of window from floor. Let ■«?=height of window. (151) 152 When the observer is…
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