Motion picture news booking guide (Apr 1923)

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)42 MOTION PICTURE NEWS MAZDA LAMP PROJECTION INCANDESCENT LAMP PROJECTION SPECIAL SUPPLEMENT. A special supplement devoted to the incandescent lamp projection (Mazda projection), putting forth the claims for the advantages of this type of apparatus. Inferences : February 10, 1923, page 721. MOTION PICTURE PHOTOGRAPHY FASCINATION OF CINEMATOGRAPHY MAKES STRONG UNIVERSAL APPEAL. Extracts from the book " Motion Picture Photography," by Carl Louis Gregory. This installment (Chapter II) deals with motion picture photography in a general manner. Extracts from the book by Carl L. Gregory appear in the issues dated February 10th, page 741 ; February 24th, page 959 ; March 10th, page 1202 ; March 24th. page 1478 ; April 7th. page 1708. References : February 10, page 741. FUNDAMENTALS OF LIGHT FOR UNDERSTANDING OF CINEMATOGRAPHY. Extract from the book " Motion Picture Photography," by Carl L. Gregory. This installment (Chapter III) gives an explanation of the fundamentals of .light for the thorough understanding of motion picture photography. References : February 24, 1923, page 959. FUNDAMENTALS OF LIGHT FOR CINEMATOGRAPHY. Chapter III (continued) of the book "Motion Picture Photography." by Carl L. Gregory. This installment deals with the fundamentals of light for motion picture photographv. Several illustrations are used to clarify the explanation. References : March 10, 1923, page 1202. FUNDAMENTALS OF LIGHT FOR CINEMATOGRAPHY. Chapter III (continued) of book "Motion Picture Photography," bv Carl L. Gregory. Continuation of article on relation of principles of physics to photography. References : March 24. 1923, page 1478. PROJECTION AND PERTAINING SUBJECTS CONSTANT POTENTIAL GENERA TORS FOR MOTION PICTURE PROJECTION. A paper before the Society of Motion Picture Engineers by A. M. Candy, Engineering Dept. of the Westinghouse Elec. & Mfg. Co., discussing the development of the constant potential motor generator for producing satisfactory results in projecting motion pictures. References : October 28, 1922, page 2197. CURVES FOR EQUIVALENT FOCUS OF OBJECTIVE THROW AND PICTURE SIZE. A lens chart enabling the selection of the proper objective lens for any given length of throw and size of picture and vice versa. This chart may be employed in the place of the lens table. References: October 21, 1922, page 2082. HOME-MADE TIME SWITCH. Detailed explanation with diagram for the construction of an automatic time switch for use in connection with the theatre. References: October 14, 1922, page 1928. METHOD FOR DETERMINING THE CORRECT SCREEN ILLUMINATION FOR THE THEATRE. A description of the loot candle meter, an instrument for the easy determination of the amount of illumination thrown on the projection screen. It is recommended that exhibitors make use of this device. References : December 2, 1922, page 2830. PROPERTIES OF THE COMPONENT ELEMENTS FOR PROJECTION. Conclusion of the series of articles on motion picture projection with Bfasda Jamps by 11. II. Magdslck and C. E. Egeler, National Lamp Works of the G. E Co. This series of articles appeared in the issues of June 24th. page 3352 ; July 1st, page 98 ; July 8th, page 204 ; July 15th, page 293 ; July 22nd, page 428; August 12th, page 798; August 19th. page 980; August 2«th, page 1064; September 2nd, page 1182; under ibis brad explaining the advantages and best method for using the G. E. equipment for Ma /da limp projection. References: September 2, 1922, page 1182.