Q: How much is 230 times 10? A: The number of years humans have been calculating with decimals. A crack team of scholars in Beijing learned this last year when they solved a 23-centuries-old puzzle.

On the appearance of the first section of this important book, it is appropriate to give some account of the evolution of logarithmic tables. Logarithmetica Britannica: being a Standard Table of ...

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 ...