A scientific calculator has two 'log' buttons on it. These are marked log and ln. The log key is used for calculations of the form \({\log _{10}}x\). For example, to work out that \(\log 10000 = 4\) ...

A logarithm is a mathematical operation that determines how many times a certain number, called the base, is multiplied by itself to reach another number. Because logarithms relate geometric ...

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 ...