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Mécanique analytique et théorie des quanta
Feb., 1927.]
BOOK R~WEWS.
34I
FLEMING, J. A.--Mercury-arc Rectifiers and Mercury-vapour Lamps. 1925. HAWK, PHILIP B,, and BERGEIM, OLAF.--Practical Physiological Chemistry. Ninth edition, revised and enlarged. 1926. JUVET, G.--M6canique Analytique et Th6orie des Quanta. I926. KEASEY, MILES A., KLINE, G. ALFERD, and MCILHATTEN, D. ALLISON.--Engineering Mathematics with Tables. 19"26. March's Thesaurus Dictionary: A Treasure House of Words and Knowledge. I925. MAYER, EI~AR.--Clinical Application of Sunlight and Artificial Radiation. 1926. PARCEL, JOHN IRA, and MANEY, GEORGEALPRED.--An Elementary Treatise o11 Statically Indeterminate Stresses. 1926. Royal Society of Edinburgh.--Transactions. Volume 54, Part 3. 1926. SHELDON, SAMU~, and HAUSMANN, ERICH.--Electric Traction and Transmission Engineering. Second edition, revised. 192o. United States Patent Office.--Manual of Classification of Patents. I923. West Virginia Geological Survey.--Mercer, Monroe, and Summers Counties. Two volumes, text and plates. 1926. BOOK
REVIEWS.
MI~CANIQUEANALYTIQUEET THI~ORIEDES QUANTA. Par G. Juvet, Professeur /t l'Universit6 de Neuchatel. vi-I5I pages, 24.1 x 15.9 cm., paper. Paris. Librairie Scientifique, Albert Blanchard, 1926. Price, 20 francs. The mathematical theories of the dynamics of the atom make use of the theorems of analytical mechanics and certain rules which relate to the theory of quanta. These theories are not entirely of a classical character and the author's object is to present the methods of analytical and celestial mechanics in a form adapted to facilitate their application to the quantification of the Bohr atom. The first part deals with these mathematical developments. The second part is devoted to the application of these methods to the theory of quanta. The mathematical theorems and deductions are set forth in the highly generalized form that will especially appeal to the mathematical physicist. THEORY OF VIBRATING SYSTEMS AND SOUND. By Irving B. Crandall, Ph.D., Member of the Technical Staff, Bell Telephone Laboratories, Inc. x-272 pages, 23 × I5 cm., cloth. New York, D. Van Nostrand Company, 1926. Price, $5 net. There are to-day thousands of listeners to sound-producing devices where not many years ago only a handful ever heard anything else than the human voice, musical instruments or noises. Not every one attended musical performances frequently, and hearing operatic music over the house-telephone which it appears could be done in Paris thirty years ago was a rare novelty. Now, myriads of persons every day listen to the talking machine, the radio or the telephone. The obvious necessity of giving these devices, which have found application in every phase of human activity, the best attainable quality of performance has latterly given rise to an immense amount of intensive study to that end.
BOOK R~WEWS.
34I
FLEMING, J. A.--Mercury-arc Rectifiers and Mercury-vapour Lamps. 1925. HAWK, PHILIP B,, and BERGEIM, OLAF.--Practical Physiological Chemistry. Ninth edition, revised and enlarged. 1926. JUVET, G.--M6canique Analytique et Th6orie des Quanta. I926. KEASEY, MILES A., KLINE, G. ALFERD, and MCILHATTEN, D. ALLISON.--Engineering Mathematics with Tables. 19"26. March's Thesaurus Dictionary: A Treasure House of Words and Knowledge. I925. MAYER, EI~AR.--Clinical Application of Sunlight and Artificial Radiation. 1926. PARCEL, JOHN IRA, and MANEY, GEORGEALPRED.--An Elementary Treatise o11 Statically Indeterminate Stresses. 1926. Royal Society of Edinburgh.--Transactions. Volume 54, Part 3. 1926. SHELDON, SAMU~, and HAUSMANN, ERICH.--Electric Traction and Transmission Engineering. Second edition, revised. 192o. United States Patent Office.--Manual of Classification of Patents. I923. West Virginia Geological Survey.--Mercer, Monroe, and Summers Counties. Two volumes, text and plates. 1926. BOOK
REVIEWS.
MI~CANIQUEANALYTIQUEET THI~ORIEDES QUANTA. Par G. Juvet, Professeur /t l'Universit6 de Neuchatel. vi-I5I pages, 24.1 x 15.9 cm., paper. Paris. Librairie Scientifique, Albert Blanchard, 1926. Price, 20 francs. The mathematical theories of the dynamics of the atom make use of the theorems of analytical mechanics and certain rules which relate to the theory of quanta. These theories are not entirely of a classical character and the author's object is to present the methods of analytical and celestial mechanics in a form adapted to facilitate their application to the quantification of the Bohr atom. The first part deals with these mathematical developments. The second part is devoted to the application of these methods to the theory of quanta. The mathematical theorems and deductions are set forth in the highly generalized form that will especially appeal to the mathematical physicist. THEORY OF VIBRATING SYSTEMS AND SOUND. By Irving B. Crandall, Ph.D., Member of the Technical Staff, Bell Telephone Laboratories, Inc. x-272 pages, 23 × I5 cm., cloth. New York, D. Van Nostrand Company, 1926. Price, $5 net. There are to-day thousands of listeners to sound-producing devices where not many years ago only a handful ever heard anything else than the human voice, musical instruments or noises. Not every one attended musical performances frequently, and hearing operatic music over the house-telephone which it appears could be done in Paris thirty years ago was a rare novelty. Now, myriads of persons every day listen to the talking machine, the radio or the telephone. The obvious necessity of giving these devices, which have found application in every phase of human activity, the best attainable quality of performance has latterly given rise to an immense amount of intensive study to that end.