Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 436
Fig. 2.—A view of the blackboard, illuminated by Uniflux Reflectors. The numberschalked on the board indicate the illumination provided. … Fin. .3.—A view of the Lecture Theatre fromilluminating the bench and blackboard. the back showing the method ot 422 THE ILLmilNATING ENGINEER. was to ascertain whether it is possiblewhen working on commercial gas orelectric supply systems to obtain reliablepolar curves without having to…
Lighting
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