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Tableau Métrique de Logarithmes

    Naturevolume 51pages386387 (1895) | Download Citation



    THE use of logarithms for calculations is, as every one knows, a great saving of labour and time, and what otherwise would be complicated pieces of work are reduced to simple computations. The facility of working depends, after some time, on the good or bad arrangement of the tables, but instances often occur where much time is lost by having to turn pages backward and forward. For the case of logarithms to five places of decimals, M. Dumesnil has devised a means of eliminating altogether the use of tables, by adopting a series of scales neatly printed on stout sheets. From these scales the divisions are so arranged that all the logarithms of the numbers from 1 to 10,000 can be easily read off, and vice versâ. The scales, or tables as they are called, are published in two qualities. The cheaper are neatly and clearly printed, and on a smaller scale than the other; but, on the whole, we recommend the more expensive sheets, as the numbering is more easy to follow (coloured numbers being used), and the divisions are more legible on them.

    Tableau Métrique de Logarithmes.

    By C. Dumesnil (Paris: Libraine Hachette and Co., 1894.)

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