Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 398
. The rapiditywith which the sliade revolves dependsupon the velocity of the heated air <ur-rent, so that the greater the wattage ab-sorbed by the lamp the greater the speedattained. Readers in the Trade can obtain theseshades upon ap])Iicatioii to the PublicityDepartment, The British… … .M.i/da revolviiiji sliad*.complete. 388 THE ILLUMINATING ENGINEER (dec. 1916) REVIEW OF BOOK. Journal of the British Science Guild {Nov.1916). The Journal of the British ScienceGuild for November last contains anumber of interesting items including aMemorandum on the Relations whichshould exist in…
Lighting
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