Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 281
YDON. 264 THE ILLUMINATING ENGINEER (sept. 1922) ASTRO INTENSIFIERS. These new metal reflectors (issued byAstro Electric, Ltd.) are of a very simpletype, a feature being their light weightsuch that, in the smallest form (TypeA), they can be dropped merely into placeon the lamp bulb. The larger… … Fig. I.—Typed. (Fig. 2). It will be observed that ineither case the reflector is brought quiteclose to the filament. It is stated thatt his has no prejudicial effect on the specialpearl silver reflecting surface, whichis protected with clear Lacquer so as tobe untarnishable. This inner surface may…
Lighting
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
