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Tables of Bessel functions of fractional order
Aug., 1949.[
BOOK N O T E S
18 7
The main sections are: Engineering alloy steels; constructional alloy steels for heat treating; special steels. As a correlated presentation of the known facts about the important alloy and special steels, this volume continues to serve a useful function. ELECTRON TUBES. VOLUMES I AND II, 1935 TO 1948 (The Ninth and Tenth Volumes of the RCA Technical Book Series), edited by A. N. Goldsmith and others. 475, 454 pages, illustrations, 15 X 22 cm. Princeton, RCA Review, 1949. Price, 252.50 per volume. The present two volumes are the ninth and tenth in the RCA Technical Book Series which reprint significant contributions by RCA authors in various fields of electronics. These are the first which have been devoted exclusively to tubes, Volume I covering the period 19351941, while Volume I I brings the record througll 1948. Following the pattern set in earlier volumes, some papers are presented in full, while others are given only in a summary. Each volume is divided into four sections: general; transmitting; receiving; and special. In addition to the articles reprinted, a full bibliography of all papers on tubes by RCA authors has been included, which, for the sake of completeness, notes those articles on the applications of tubes which are considered in other volumes of the series. The volumes will serve as a useful compilation of the many contributions made to electron tube research by RCA engineers. .'~NNALES DES TRAVAUX PUBLICS DE BELGIQUE. N u m e r o jubilaire 1843-1948. 213 pages, illustrations, 24 X 31 cm. Brussels, G.I.G., 1949. No price. In recognition of its hundredth year of publication, the Annales des Travaux Publics de Belgique, established in 1843, has just issued a special jubilee number. Because of its function as the organ of the Belgian Ministry of Public Works, the Annales offers in this number several historical articles on the various types of public works executed in Belgium since 1830, as well as other subjects in the field of civil engineering. After an introductory section outlining the origin and purpose of the publication, the first section is devoted to roads, with three articles. Of these,, one is devoted to planting along the highways, discussing briefly the various problems encountered and the need for planning. Canals are treated at some length and the accompanying maps depict graphically the great development since 1914. Buildings and bridges are also treated in separate chapters. Louis Baes has written a s u m m a r y article on the resistance of materials, the theory of elasticity and of the plasticity of solid bodies. Although this has been treated in linfited scope, it makes a m p l e reference to the literature and should prove useful. Other articles consider such varied topics as research laboratories, developments in metal construction, railroad bridges, local rapid transit, metallurgy and w a t e r works. With many illustrations this is a worthy issue to note the hundredth anniversary of the Annales, and it will prove valuable as a reference source on the history of engineering in Belgium. TABLES OF BESSELFUNCTIONS OF FRACTIONAL ORDER, prepared by the Computation Laboratory of the National Applied Mathematics Laboratories, National Bureau of Standards. Volume II. 365 pages, tables, 20 X 27 era. New York, Columbia University Press. 1949. Price, 2510.00. The JOURNAL for December 1948 carried a note on the appearance of Volume I of these tables. The present volume comprises tables for Bessel functions of fractional order: I~ (x) for v = 4- ~. ± ~, 4- ~, 4- i. The value and usefulness of tables such as these needs no further comment. BIBLIOGRAPHY ON SPRAYS, by K a l m a n J. DeJuhasz. 98 pages, 21 X 28 cm. New York, Texas Company, Refining Department, Technical and Research Division, 1948. No price. The recent development in gas turbines and jet engines has encouraged the author to Iwing up-to-date an earlier bibliography on liquid jets, sprays and nozzles, published in 1932.
BOOK N O T E S
18 7
The main sections are: Engineering alloy steels; constructional alloy steels for heat treating; special steels. As a correlated presentation of the known facts about the important alloy and special steels, this volume continues to serve a useful function. ELECTRON TUBES. VOLUMES I AND II, 1935 TO 1948 (The Ninth and Tenth Volumes of the RCA Technical Book Series), edited by A. N. Goldsmith and others. 475, 454 pages, illustrations, 15 X 22 cm. Princeton, RCA Review, 1949. Price, 252.50 per volume. The present two volumes are the ninth and tenth in the RCA Technical Book Series which reprint significant contributions by RCA authors in various fields of electronics. These are the first which have been devoted exclusively to tubes, Volume I covering the period 19351941, while Volume I I brings the record througll 1948. Following the pattern set in earlier volumes, some papers are presented in full, while others are given only in a summary. Each volume is divided into four sections: general; transmitting; receiving; and special. In addition to the articles reprinted, a full bibliography of all papers on tubes by RCA authors has been included, which, for the sake of completeness, notes those articles on the applications of tubes which are considered in other volumes of the series. The volumes will serve as a useful compilation of the many contributions made to electron tube research by RCA engineers. .'~NNALES DES TRAVAUX PUBLICS DE BELGIQUE. N u m e r o jubilaire 1843-1948. 213 pages, illustrations, 24 X 31 cm. Brussels, G.I.G., 1949. No price. In recognition of its hundredth year of publication, the Annales des Travaux Publics de Belgique, established in 1843, has just issued a special jubilee number. Because of its function as the organ of the Belgian Ministry of Public Works, the Annales offers in this number several historical articles on the various types of public works executed in Belgium since 1830, as well as other subjects in the field of civil engineering. After an introductory section outlining the origin and purpose of the publication, the first section is devoted to roads, with three articles. Of these,, one is devoted to planting along the highways, discussing briefly the various problems encountered and the need for planning. Canals are treated at some length and the accompanying maps depict graphically the great development since 1914. Buildings and bridges are also treated in separate chapters. Louis Baes has written a s u m m a r y article on the resistance of materials, the theory of elasticity and of the plasticity of solid bodies. Although this has been treated in linfited scope, it makes a m p l e reference to the literature and should prove useful. Other articles consider such varied topics as research laboratories, developments in metal construction, railroad bridges, local rapid transit, metallurgy and w a t e r works. With many illustrations this is a worthy issue to note the hundredth anniversary of the Annales, and it will prove valuable as a reference source on the history of engineering in Belgium. TABLES OF BESSELFUNCTIONS OF FRACTIONAL ORDER, prepared by the Computation Laboratory of the National Applied Mathematics Laboratories, National Bureau of Standards. Volume II. 365 pages, tables, 20 X 27 era. New York, Columbia University Press. 1949. Price, 2510.00. The JOURNAL for December 1948 carried a note on the appearance of Volume I of these tables. The present volume comprises tables for Bessel functions of fractional order: I~ (x) for v = 4- ~. ± ~, 4- ~, 4- i. The value and usefulness of tables such as these needs no further comment. BIBLIOGRAPHY ON SPRAYS, by K a l m a n J. DeJuhasz. 98 pages, 21 X 28 cm. New York, Texas Company, Refining Department, Technical and Research Division, 1948. No price. The recent development in gas turbines and jet engines has encouraged the author to Iwing up-to-date an earlier bibliography on liquid jets, sprays and nozzles, published in 1932.