Synoptical and Topical Index of A.I.E.E. Transactions

1918 Transactions of the American Institute of Electrical Engineers  
A. 1. E. E. TRANSACTIONS Vol. XXXVII, Parts I and 11 T'he main headings under which these synopses are classified were arrived at by a careful stud-y of all the papers contributed since the organization of the Institute. The method of making this classification may be called the automatic method, since it is created by sorting the papers themselves into groups and then naming the groups. Many papers fall naturally into several different groups and in such cases they are inserted under as many
more » ... ted under as many different headIs as it is thought they rightfully belong. The classified synopses are designed for those searching for comprehensive information on any given topic, while the subject index is intended for those looking up specific and definite data or information. GENERAL THEORY THE TECHNICAL STORY OF THE FREQUENCIES B. G. Lamme Vol. xxxvii-1918, pp. 66-85 The various frequencies used in alternating-current work in America are first mentioned, and the primary reasons for their introduction are given. This is followed by a discussion of various alternating current applications which were more or less dependent upon frequency. It is shown that there was an -apparent need for two standard frequencies in the region of 60 and 25 cycles, and, further, why 60 and 25 cycles have prevailed. The special fields of application of each one are discussed fully and it is shown why 25
doi:10.1109/t-aiee.1918.4765593 fatcat:xvjhvsg6mjg5tac7mzl52bhf6i