Definitions for richter scale
Random House Webster's College Dictionary
a logarithmic scale for expressing the magnitude of an earthquake, a measurement under 5 considered minor and over 7 indicating major destruction.
Origin of Richter scale:
1935–40; after Charles F. Richter (1900–85), U.S. seismologist
a logarithmic scale of 1 to 10 formerly used to express the magnitude of an earthquake on the basis of the size of seismograph oscillations
A value on the Richter scale
A logarithmic scale used to express the energy released by an earthquake, each increase of 1 representing a 32-fold increase in energy.
Origin: From American seismologist Charles Richter.
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