Projection engineering (Sept 1929-Nov 1930)

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Projection Engineering, September, 1929 Page 23 as nothing compared with the introduction of the first practical televisor ready to receive a regular television broadcasting service. Television in the Business and Social World The third direction which television will take also has to do with the telephone engineers, and that is the application of sight transmission to individual business and social activities.Every once in a while some writer ■enjoys a joke about the future telephone service in which we shall have to exercise great care in answering calls for fear of being televised in a bath tub, in a rather advanced stage of undress, or again amid questionable surroundings not agreeing altogether with our vocal assurances to friend wife at the other end of the line. Well, those puns are not so far-fetched. No doubt we shall have television as a supplementary service of the telephone, although we do not expect to see this service in every home, because of the considerable cost involved. More likely, there will be stations in different cities, where business men can telephone other business men, and meet face to face by telephone proxy, in discussing important deals. With the The televisor, shown on opposite page, connected to a short-wave radio receiver. features quite as well as the voice before us, it will be easier to handle business by telephone. Well, what does this all mean to the radio and motion picture industries? Answering that question, the writer goes on record at this time with the prediction that the two industries must adopt television and raise it to robust manhood. Television will pass through five main epochs in its rapid development over a period of a decade or less. These epochs will be : {a) Experimental epoch, from which ice are just about to emerge, so as to transplant our experiments from the laboratory to the average home. (b) First practical televisors, crude but interesting, from which ice shall obtain much practical information. These televisors will also call for regular television broadcasting, irrespective of the number of lookersin. (c) Television hoic-to-make-itepoch, in which the television technique, rather than the subject matter of the programs, tcill prove of greatest interest to the public. (d) The epoch of television standardized practice, with the experimental activities giving ivaij to definite designs for mass production programs. (e) The incorporation of the television feature along with the usual sound broadcast receiver, with synchronised sight and sound features. once television has attained a comparable state of perfection. And so, in conclusion, television is far from dead. Much is being done even though less is being said than a year ago. Action, rather than loose talk, is the order of the day. We can expect great things when men, tired of talking, get down to brass tacks. Visual Communication: A Bibliography References to the Important Works on Phototelegraphy, Television and Relative Subjects By John P. Arnold BIBLIOGRAPHIES do not coinpare favorably with light and sentimental fiction as an entertaining form of reading, yet such compilations have a superior merit to persons interested in any particular art or science. They may not be pleasurable, but often they happen to be informative, and information, ii a Id, \\ lien it Hues i n it gel ymi in trouble, is likely to pul money in your pocket, the latter sometimes having the especial advantage of getting you out of the former. Hence it is for those who want to know something more about visual communication thai this bibliography has been prepared. The value of this present efforl will not be found in a complete listing of the books, papers, and patents referring to the specific branches of the arl known as phototelegraphy and television. That in fad would be Impossible within the limits of available space, for the idea of the electrical transmission of scenes and their representations is over seventy years old and its literature has increased to voluminous, if not always respectable, proportions. it would he of little value to Include much of this early literature, for the development of more efficient instruments and a new technique of electrical communication has rendered obsolete many of the previous systems, and hence this would only be valuable from the historical viewpoint. It may be mentioned in passing that this is the first extended bibliography of this subject which h;ts yet appeared; that is. at least as far as the writer is aware. The thoughl .also occurs this attempt may inspire some other person to sit down and compile a more complete ami more thorough one. In the event thai some persons may wish to use the present list as a nucleus for preparing a really complete bibliography, it should be mentioned thai many of the descriptive articles which have appeared in the radio magazines in this country and abroad in recenl years have i o omitted. To supply these omissions, One is referred to the usual library indices. Doly' "Selenium: A List of References, 1817-1925" (published by the New York Public Library), the writer's department of photoelectricity and visual communication in ■•Radio" (July, 1928 to date), mid the hooks listed herein. From these sources, practically the whole literature can he recovered. [BOOKS] English Press Baker, T. Thorne. Wireless Pictures and Television. New York: l». Van Nostra ml Co.. 1927. 188 pp. Blake, G. G. History of Radio Tclegraphy and Telephony. London: Chapman & Hall. Ltd.. 1928. loo pp. Pournier d'Albe, B. E. The Moon Element, An Introduction to tin Wonders of Selenium. New York: D^ Appleton & Co.. 1924. kk; int. I 'iii-dale. Alfred. Television. London. N. Y. : Pitman & Sons. 1926. .Jenkins. ('. Francis. Radio Vision. Washington, I). 0.: Jenkins Laboratories, 1928. Lane, Henry .Milton. The Boston Post Hook on Television. Boston: Posl Publishing Co., 1928. 35 pp. I.. •niier. B. T. Practical let, vision. London : Brnesl Benn, 1928. 175 pp. i Pub. also by Van Nostrand, v y. i Loomls, Mary Texanna. Radio Theory unit Operating. Washington, I>. C. : Loomis Pub. Company. 1<)12!». 4th «■.!.. 992 pp. Martin. Marcus .1. The Electrical Transmission of Photographs. Lon don. \. Y. : Pitman & Smis. Ltd.. 1921. 180 pp.