. "Charles Francis Richter"@en . "1900Z"^^ . . . "Richter, Charles Francis"@en . . "1900-04-26Z"^^ . . . . "1985-09-30Z"^^ . "1985Z"^^ . . "Charles Francis Richter (/\u02C8r\u026Akt\u0259r/; April 26, 1900 \u2013 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."@en . . "Seismologist and mathematician" .