Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 521
utilising efficiency of only 40 percent. The total number of lumensto be generated should therefore be120,000. It was decided to employ tenunits each providing about 12.000 lumens.The lighting is of the semi-indirectcharacter, just about fifty per cent,of the light being directed upwards. The large… … Fig. 4.—General view of the Hall showin<.pedestal lighting. THE ILLUMINATING ENGINEER 507 THE ELECTRIC LIGHTING OF A COVERED LAWN TENNIS COURT. It is now about two years ago sincewe first described the lightino; of theGoverned Lawn Tennis Courts at Dul-wich, by high-pressure gas.* At thattime…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
