- Richterscale
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Rich·ter scale (rĭkʹtər)
n.
A logarithmic scale used to express the total amount of energy released by an earthquake. Although the scale has no upper limit, values are typically between 1 and 9, and each increase of 1 represents a 32-fold increase in released energy.[After Charles FrancisRichter (1900-1985), American seismologist.]
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Universalium. 2010.