In what year was the Richter scale first used?
1935
1940
1925
1950
Answer
The Richter scale was first introduced in 1935 by Charles Francis Richter, a seismologist at the California Institute of Technology, to measure the strength of earthquakes. It measures the amplitude of seismic waves recorded by seismographs, assigning numerical values based on the logarithm of the amplitude. Higher Richter scale values indicate more powerful earthquakes.
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