Main Page | See live article | Alphabetical index Charles Francis Richter (April 26, 1900 - April 20, 1985), was an American seismologist, born in Hamilton, Ohio. He is most famous as the creator of the Richter Magnitude Scale, which quantifies the size of earthquakes. He first used the scale in 1935. He developed the scale in collaboration with Beno Gutenberg; both worked at the California Institute of Technology. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.