Charles Richter

Common card · No. 444114

Charles Francis Richter (; April 26, 1900 – September 30, 1985) was an American seismologist and physicist. He is one of the creators of the Richter scale, which, until the development of the moment magnitude scale in 1979, was widely used to quantify 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.

Read on Wikipedia · Image en:Caltech photograph, Public domain