Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 246
er of the theatre OABC, to Scale, the middle point being <». and AH being half the long side and BC half the shortside. Draw the diagonal <>P, and drawOD and OB to the middle points of A I.and BC. Draw <;F at right-angleOD. This represents the side AB swung round to face 0. Similarly… … A view of the Lecture Theatre of the Institution of Civil Engineers, London. Theillumination is derived mainly from the white frieze lighted by concealed lights,and there aie also mercury vapour lamps above the glass in the central dome.From a knowledge of the dimensions of the room and the area…
Lighting
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