Definition of Richter scale
: an open-ended logarithmic scale for expressing the magnitude of a seismic disturbance (such as an earthquake) in terms of the energy dissipated in it with 1.5 indicating the smallest earthquake that can be felt, 4.5 an earthquake causing slight damage, and 8.5 a very devastating earthquake
Origin and Etymology of richter scale
Charles F. Richter
First Known Use: 1936See Words from the same year
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