International projectionist (Jan-Dec 1953)

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Bl 395593 Jflf,23l953 INTERNATIONAL PR0JECTI0NIS1 With Which Is Combined Projection Engineering AARON NADELL, Editor Volume 28 JANUARY 1953 Number 1 Index and Monthly Chat 3 IA Elections 19 Natural Vision — Another Step in Measuring Sound Absorption . . . 20 the Right Direction 5 Earle Jones, Seymour Edel Merle Chamberlin man and Albert London Some Technical Details of Natural Vision 6 9 Ampro Corp.'s Model 477 Magneto-Optical Projector Local Sources of 16-mm Films . . Letters to the Editor Obituaries 21 1952: A Wonder Year for Progress 22 23 Leroy Chadbourne 23 Telecasts: Color Television Sim The American Labor Movement. 24 plified by New Paramount Tube 14 IA-IP Amateur Radio Bulletins. . 25 Types of Theatre Sound Repro IA-IP 'Ham' List 26 ducers 16 News Notes Robert A. Mitchell Technical Hints In the Spotlight . . 18 Miscellaneous Items Published Monthly by INTERNATIONAL PROJECTIONIST PUBLISHING CO., INC. 19 West 44 Street, New York 36, N. Y. Telephone: MUrray Hill 2-2948 R. A. ENTRACHT, Publisher SUBSCRIPTION REPRESENTATIVES AUSTRALIA: McGills, 183 Elizabeth St., Melbourne NEW ZEALAND: Te Aro Book Depot, Ltd., 64 Courtenay Place, Wellington ENGLAND and ELSEWHERE: Wm. Dawson & Sons, Ltd., Macklin St, London, W. C.2 Yearly Subscription: United States and possessions, $2.50 (twoyears, $4) ; Canada and foreign countries, $3; single copies, 30 cents. Changes of address should be submitted two weeks in advance of publication date to insure receiptof current issue. Entered as second class matter February 8, 1932, at the Post Offiee at New York, N. Y., under the act of March 3, 1879. Ejithe contents copyrighted X953 by International Protectionist Publishing Co., Inc. International fRojEcnoNTyi' assumes nn rn-irmmihility for pergonal opinions appearing in signed articles m Its columns, or for unsolicited communications. MONTHLY CHAT ELSEWHERE herein will be found a detailed summary of the remarkable and unprecedented variety of new developments which inventors and manufacturers in our field brought forward during the year 1952. Eidophor, Natural Vision, Cinerama, mirrors that reflect light but not heat, magnetic soundtracks, transistors, drivein size television, television transmission beyond the horizon . . . the reader is referred to the summary on another page for details . . . there has surely been no year like 1952 for technical progress in all the history of our industry ! * * * J even a reasonable part of all these vations become standard practice im;e changes must come to the projecroom and to the projectionist. Eidophor will bring with it a refrigerator and a vacuum pump for the projectionist to manage and maintain. Television of any variety embodies a very large number of new electronic circuits unlike any ever used in the theatre before; Natural Vision entails new interlock equipment; transistors promise to revolutionize practically all our electronic equipment and practices. * * * The projectionist naturally cannot hope to make himself a top expert in maintaining all these new devices plus and in addition to the very considerable responsibilities he has now; but he mil have to acquire the competence to apply "what to do until the doctor comes" first aid in every case, because the show must go on until help arrives, and there is no one in the theatre except the projectionist who can see that it does. IP pledges itself to do its share. Except only as patent secrecies and similar reticences may hinder, we will ferret out the facts and lay them before the craft in these pages. (See, for example, the detailed account of Natural Vision interlock arrangements elsewhere in this issue.) And any reader who may not see herein exactly what he wants is cordially and most heartily invited to ask for it. All of us are going to have to learn "projection" all over again. That art and craft and science is now changing monthly. Like the Queen in Alice in Wonderland we are all going to have to run as hard as we can to stay in the same place. But it is becoming an increasingly valuable place to stay, for with all these new and marvelous developments the projectionist is no longer in the remotest sense an "operator." He is (and becoming more so daily) a very highly skilled, valuable, versatile, and resourceful technician, entitled to be respected and paid accordingly. INTERNATIONAL PROJECTIONIST January 1953