Illuminating engineering practice; lectures on illuminating engineering delivered at the University of Pennsylvania, Philadelphia, September 20 to 28, 1916, under the joint auspices of the University and the Illuminating Engineering Society (1917)
University of Pennsylvania, Illuminating Engineering Society · New York, McGraw-Hill Book Company, Inc; [etc., etc.] · leaf 679
dmarked an epoch in the science of lighting and the art of illumination.Previous expositions had depended upon outline lighting for nighteffects and this method had probably reached the limit of its possi-bilities at the Pan-American Exposition at Buffalo. The outlinemethod, therefore, was set… … I .9 s S I S >< ■ ^ « § § ^ 3 II ^ S s SIa ii Tj fi 2 ^ i g a a . o „ 3 _ _ M ; 2 <B ■» o, i S f .3 fi g g o s
Lighting
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