Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 515
e ; in order to decide whetherany room is well-lit on this basis, onemust premise a certain brilliancy of NATURAL LIGHTING OF SANDBACH JUNIOR GIRLS SCHOOL (Room C). Actinoracter Value = 30 seconds.The room is mapped out into sections in which the illumination is respectively i!^?-/^^^ (over 10… … l6/4. 10 I2/2| |8V l4/z 15 9-16 fc / IJO 13 12 J .-■ , |9 , ■■■■■ 53/* 33/^1 0/ER16 fc a-aV+fc. UNDER Sf.-C
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
