Abstract
PART IV. of this monumental work, the third to be published, gives the logarithms of numbers between 40,000 and 50,000. These were obtained by adding the logarithm of 0.5 to the logarithms of all the even numbers between 80,000 and 100,000 which have already appeared in Parts VIII. and IX. The present part contains an analysis of the errors for the numbers between 90,000 and 100,000 in Briggs' “Arithmetica Logarithmica” published in 1624. It is interesting to note that nearly all the errors are in the last places of the logarithms. An inspection of the analysis shows that the first group of six figures in Briggs's 15-place logarithms contains errors in 9 instances, the second group of five figures in 3 instances, the remaining errors being in the last group of four figures.
Logarithmetica Britannica: being a Standard Table of Logarithms to Twenty Decimal Places.
By Dr. Alexander John Thompson. Part 4: Numbers 40,000 to 50,000. (Tracts for Computers, No. 16.) Issued by the Biometric Laboratory, University of London, to commemorate the Tercentenary of Henry Briggs' publication of the “Arithmetica Logarithmica, 1624”. Pp. vi + 100. (Cambridge: At the University Press, 1929.) 15s. net.
Article PDF
Rights and permissions
About this article
Cite this article
M. T., L. Logarithmetica Britannica: being a Standard Table of Logarithms to Twenty Decimal Places . Nature 124, 721 (1929). https://doi.org/10.1038/124721a0
Issue Date:
DOI: https://doi.org/10.1038/124721a0