The lighting book; a manual for the layman, setting forth the practical and esthetic sides of good lighting for the home (1913)
Godinez, F. Laurent · New York, McBride, Nast & company · leaf 92
between modern gas and electric illuminants.Assuming that both globes are without white in-ner surfaces, and that the one on the left E isa tungsten lamp, and the one on the right G aninverted Welsbach reflex lamp. The tungstenlamp would be at a disadvantage since the great-est light (on the side)… … a r u o or (J ^ be CJ f5 c tfl a O rt p
Lighting
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