Richardson's handbook of projection (1927)

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HANDBOOK OF PROJECTION FOR Is the crater area per ampere of the high intensity much less than that of the ordinary arc? 786 What is the difference in point of efficiency in use of amperage as between high intensity and ordinary arc? 787 Color of Light What may. be said concerning the tone of high intensity light for projection? 787 Current Strength for High Intensity Is it much more important to use high intensity carbons exactly suited in diameter to the current strength than when the ordinary arc is used? 787 Important Those using high intensity should study the matter on pages 788 and 789 very carefully. General Electric High Intensity Lamp Description and detailed instructions 790 Powers Improved High Intensity Lamp Description and detailed instructions 798 Ashcraft automatic high intensity 804 "HC" high intensity lamp 812 Mazda Projection 887 to 924 Motor Generators See "Current Rectification.,, Motor Generators in General 493 to 512 Motor Generators, Different Makes 512 to 557 Mercury Arc Rectifiers Principle of operation 567 How bulb is started 568 Installation instructions 569 Ventilation necessary 570 Results as compared with straight D. C 570 General Electric Rectifier Pages 570 to 586 Westinghouse Rectifier Pages 586 to 595 vi