Richardson's handbook of projection (1927)

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HANDBOOK OF PROJECTION FOR Upper Magazine Tension How much tension should there be on the upper magazine reel ? 641 Aperture Dimensions What is the standard dimensions of projector apertures ? 641 Threading the Projector t Describe the process 642 Projector Rotating Shutter Pages 644 to 658 Measuring Speed of Intermittent Movement Pages 659 to 666 Powers Projectors Detailed instruction 667 to 704a Simplex Projector Detailed instructions 705 to 738 Motiograph DeLuxe Model Projector Detailed instructions 739 to 763 Baird Projectors Detailed instructions 764 to 783 Rectifiers, Mercury Arc See "Mercury Arc Rectifiers." Rectifiers, Mercury Arc, General Electric 570 Rectifiers, Mercury Arc, Westinghouse . . 586 Reflector Arc Lamp, The Principles involved 817 to 834 What is the officially correct name of this type of lamp ? 817 What are the three principle reasons for the efficiency of this type of arc lamp? 817 Compare the angle of light ''picked up" by the condenser employed by the ordinary arc and the angle the reflector type lamp utilizes Fig. 309a, page 819 The ordinary condenser loses much light by reflection from its surfaces. Is this loss reduced when a curved mirror is used ? 822 x