Motion Picture Herald (Apr-Jun 1931)

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ril 11, 1931 Motion Picture Herald 127 Sixteen Million • • • /YiOTION picture projection today demands a source of light sixteen million times as brilliant as the screen. Due to losses through aperture, shutter, film, optical system and screen absorption, only a small percentage of the light from the source is reflected from the screen. This is spread over a picture a half million times the area of the arc crater from which it comes. That is why the crater brilliancy must be sixteen million times the brilliancy of the screen. National Projector Carbons hold their leadership in the motion picture theatre because they provide a source of steady, white light surpassing the sun in intrinsic brilliancy. Over fifty years of experience, constant research and the most modern manufacturing facilities assure their uniformity. Yet they are paid for, at each performance, by two satisfied patrons. NATIONAL PROJECTOR CARBONS Sold exclusively through distributors and dealers. National Carbon Company ivill gladly cooperate with the producer, exhibitor, machine manufacturer or projectionist on any problem involving light. NATIONAL CARBON COMPANY, INC. Carbon Sales Division ' Cleveland, Ohio Unit of Union Carbide | I | ij and Carbon Corporation Branch Sales Offices: New York Pittsburgh Chicago San Francisco * to One