What they are: A logarithm is the exponent you raise a base to in order to get a number, acting as the inverse of exponentiation. Why they matter: They simplify multiplication, division, and roots ...

NO practical man ever saw the least difficulty either in the idea of logarithms to a given base or in the use of common logarithms in arithmetical work. But if the practical man becomes inquisitive as ...

IN a short review in NATURE of November 3 (p. 684) it is remarked that “The notation ln for 'log e ' will probably be somewhat strange to British readers”. You have full access to this article via ...