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 ...

The logarithm of 1000 to base 10 is 3. It’s also important to understand natural logarithms which explain logarithms from both a time and growth perspective.

The contents of the book are: (1) logs of numbers, with differences and full tables of proportional parts; (2) logarithmic sines, etc., interpolated to the second; (3) natural sines, etc ...

Revise what logarithms are and how to use the 'log' buttons on a scientific calculator as part of Higher Maths.