Richter scale
The Richter scale (), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, is a measure of the strength of earthquakes, developed by Charles Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it the "magnitude scale". This was later revised and renamed the local magnitude scale, denoted as ML or ML. Because of various shortcomings of the original ML scale, most seismological authorities now use other similar scales such as the moment magnitude scale (Mw) to report earthquake magnitudes, but much of the news media still erroneously refers to these as "Richter" magnitudes.