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Charles Francis Richter
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Charles Richter, c. 1970
Born (1900-04-26)April 26, 1900
Died September 30, 1985(1985-09-30) (aged 85)
Alma mater Stanford University; California Institute of Technology
Known for Richter magnitude scale
Gutenberg–Richter law
Surface-wave magnitude
Scientific career
Fields Seismology, Physics
Institutions California Institute of Technology

Charles Francis Richter; April 26, 1900 – September 30, 1985) was an American seismologist and physicist.

Richter is most famous as the creator of the Richter magnitude scale, which, until the development of the moment magnitude scale in 1979, quantified the size of earthquakes. Inspired by Kiyoo Wadati's 1928 paper on shallow and deep earthquakes, Richter first used the scale in 1935 after developing it in collaboration with Beno Gutenberg; both worked at the California Institute of Technology.

The quote "logarithmic plots are a device of the devil" is attributed to Richter.

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