## Richter scale

Rich·ter scale⌂

a logarithmic scale for indicating the magnitude of earthquakes using data from a seismograph: each step represents a magnitude that is about 10 times greater than the preceding step, with 1 indicating a disturbance detectable only by instruments and 7 one that can cause major damage to buildings

Origin of Richter scale

devised by C.*Richter*(1900-85), United States seismologist

## Richter scale

noun

A logarithmic scale used to express the amount of energy released by an earthquake. Its values typically fall between 0 and 9, with each increase of 1 representing a 10-fold increase in energy.

Origin of Richter scale

After Charles Francis*Richter*,

*(1900–1985), American seismologist*.

## richter-scale

Proper noun

- (seismology) a logarithmic scale used to express the energy released by an earthquake, each increase of 1 representing a 32-fold increase in energy.

Noun

(*plural* Richter scales)

- A value on the Richter scale
*The students also faced and experienced earthquakes at various Richter scales.*

Origin

From American seismologist Charles Richter.