Close Up (Jul-Dec 1929)

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CLOSE UP I know of film lovers who are awed, at moments, by the talkies. They felt quite happy about silent Pudovkins, they knew how silent films tried to deceive the public, but not, of course, them : now, when listening to a gentleman say I can't go on they are troubled with a doubt, a deadly doubt that they are as much in the dark about this new form of the art of light as their neighbour. After reading ]Vlr. Cameron's manual they will be freed from inhibition, in fact they will feel an itch to run behind the scenes and help the operator in tim^es of stress. It is all rather matter of fact, but the four hundred pages give the reader a real line-up. The history of the talkie began to be hectic in 1873 when Willoughby Smith demonstrated, to the world of Science, the properties of selenium ; which alters its resistance to an electrical circuit as light fluctuates on it. He exhibited, also, that varying heat in light rays, falling on such a substance as lamp black, caused alternate expulsions and absorptions of gas. Professor Bell stepped into the dim limelight, which haloes the heads of those in the world of Science, with his " Singing Arc ". It was Ruhmer who first applied these discoveries to the cinema, although, as Mr. Herring might say, that sentence has nothing to do with the rest of the article. The beginner will be grateful to ^Iv. Cameron for giving the schoolroom laws of sound, a most forthright section which follows the history. The difference between longitudinal waves and transverse waves (well, you'd be surprised) ; telegraphy and telephony ; the common vacuum tubes ; light sensitive cells, as the photoelectric cell, by means of which common print can be read to the blind, the 325