Charles Francis Richter (April 26, 1900 – September 30, 1985), was an American seismologist, born outside of Hamilton, Ohio. He is most famous as the creator of the Richter magnitude scale, which quantifies the size of earthquakes. He first published the scale in 1935. He further developed the scale in collaboration with Beno Gutenberg; both worked at California Institute of Technology, California, USA. The quote "logarithmic plots are a device of the devil" is attributed to Richter. April 26 is the 116th day of the year in the Gregorian Calendar (117th in leap years). ... 1900 (MCM) was an exceptional common year starting on Monday of the Gregorian calendar, but a leap year starting on Saturday of the Julian calendar. ... September 30 is the 273rd day of the year (274th in leap years) in the Gregorian calendar. ... 1985 (MCMLXXXV) was a common year starting on Tuesday of the Gregorian calendar. ... Seismology (from the Greek seismos = earthquake and logos = word) is the scientific study of earthquakes and the movement of waves through the Earth. ... Hamilton is a city in Butler County, Ohio, United States. ... Official language(s) None Capital Columbus Largest city Columbus Largest metro area Cleveland Area  Ranked 34th  - Total 44,825 sq mi (116,096 km²)  - Width 220 miles (355 km)  - Length 220 miles (355 km)  - % water 8. ... Richter magnitude test scale (or more correctly local magnitude ML scale) assigns a single number to quantify the size of an earthquake. ... This article is about the natural seismic phenomenon. ... 1935 (MCMXXXV) was a common year starting on Tuesday (link will take you to calendar). ... Beno Gutenberg (June 4, 1889 – January 25, 1960) was a German-born seismologist who made several important contributions to the science. ... The California Institute of Technology (commonly referred to as Caltech)[1] is a private, coeducational university located in Pasadena, California, in the United States. ... Official language(s) English Capital Sacramento Largest city Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... Logarithms to various bases: is to base e, is to base 10, and is to base 1. ... The Devil is a title given to a supernatural entity, who, in most interpretations of the Abrahamic faiths, is the central embodiment of evil. ...

He and his wife were both avid naturists. They married in 1928 and remain married until her death in 1972. Richter remained active as a consultant and earthquake expert through the 1970s. ^[1] Nudism, or naturism, is the practice of going nude or unclothed in social and usually mixed gender groups, specifically in cultures where this is not the norm. ...

See also

• Gutenberg-Richter law
• Other seismic scales

In seismology, the Gutenberg-Richter law states that the number of earthquakes per year of Richter magnitude M statistically has the form Number of earthquakes of size M per year ~ exp(a - bM) where exp is the exponential function. ... // Look up scale in Wiktionary, the free dictionary. ...

References

External links

• Charles Richter Quotations
• Charles Richter Interview
• Richterabelia, including photos