logarithm

If the characteristic of a logarithm is negative, Oughtred indicates this fact by placing the - above the characteristic.

The logarithm of the number is then obtained by adding the previously calculated logarithms of the factors.

What is the probability that the fifth decimal of a logarithm taken at random from a table is a '9'?

We can calculate our logarithm without recourse to the table, but we do not wish to give ourselves the trouble.

In July, while at work on logarithm tables, he was overtaken by a sudden fainting fit, evidently of an epileptic nature.