Schereschewsky, Joseph Williams, 1873-, Tuck, Davis Henry, 1886-1953, United States. Public Health Service. Public health bulletin no. 71 · Washington, Govt. print. off. · leaf 165
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… … O K i Fig. 2.—Method of determining angle of glare for cutting and basting tables. Angle of glare.—^The angle of glare is determined as foUows forcutting and basting tables: Let c=height of the eye of the cutter from the floor. Let T=height of the table top from the floor. Let W=width of the table.…
Occupational diseases · Factories · Textile industry · Industries
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