منابع مشابه
296 Recent Mathematical Tables Recent Mathematical Tables
In several problems considered in the Antenna Laboratory, Cambridge, Mass., the functions fi(x) = x tan * and/2(ac) = x tanh x have arisen. Tables of these functions with the required range, interval of argument, and number of significant figures apparently do not exist; consequently, such tables were computed specifically to satisfy these needs. They were prepared in the form of reports with t...
متن کاملHow it was: Paper tapes and punched cards
Perforated paper products As you can imagine, it would be somewhat inconvenient to have a computer that forgot everything it knew if its operator turned it off before stepping out for a bite of lunch. Similarly, imagine a programmer's frustration if, after spending countless hours using a Switch Panel to enter a program, the janitor carelessly disconnected the computer in order to vacuum the of...
متن کاملThe Use of Punched Cards in Molecular Structure Determinations II
I N this article we discuss briefly the evalua tion of the intensity and radial distribution functions which are involved in the determina tion of the structures of gas molecules by the electron diffraction method.1 Heretofore, these calculations were by far the most time-consuming part of the entire investigation; however, with International Business Machines Corporation equipment and the pu...
متن کاملRecent Mathematical Tables
89[D, E].—Project for Computation of Mathematical Tables (A. N. Lowan, technical director). Tables of Circular and Hyperbolic Sines and Cosines for Radian Arguments. Prepared by the Federal Works Agency, Work Projects Administration for the State of New York, conducted under the sponsorship of the National Bureau of Standards. New York, 1940, 1939. xx, 405 p. 20.9X27 cm. Reproduced by a photo o...
متن کاملRecent Mathematical Tables
The first edition of this work (viii, 182 p.) appeared in 1937 and the size of its page was 19.1 X 26 cm. For the second edition a photographic copy of these pages was made in reduced size, the only changes being in the addition on page viii of a preface for the second edition, and of nine new words on the title page. It will be observed, however, that an Appendix of 40 new pages has been added...
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ژورنال
عنوان ژورنال: Mathematics of Computation
سال: 1945
ISSN: 0025-5718
DOI: 10.1090/s0025-5718-45-99072-7