As seismologists gained more experience from earthquake records, it became obvious that the problem could not be reduced to a single peak acceleration. In fact, a full frequency of vibrations occurs. — Charles Francis Richter

Tags: #Problem, #Single, #Fact, #CharlesFrancisRichter, #American, #Scientist

Mini who’s who:

Charles Francis Richter : American Scientist
Born:  April 26, 1900
Died:  April 20, 1985