\myheading{Common (base 10) logarithms} Also known as ``decimal logarithms''. Denoted as \texttt{lg} on handheld calculators. 10 is a number inherently linked with human's culture, since almost all humans has 10 digits. Decimal system is a result of it. Nevertheless, 10 has no special meaning in mathematics and science in general. So are common logarithms. One notable use is a decibel logarithmic scale, which is based of common logarithm.