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en.wikipedia.org/wiki/Richter_magnitude_scale

The Richter magnitude scale assigns a magnitude number to quantify the size of an earthquake. The Richter scale, developed in the 1930s, is a base-10 ...

earthquake.usgs.gov/learn/topics/measure.php

The Richter Scale is not commonly used anymore, except for small earthquakes recorded locally, for which ML and Mblg are the only magnitudes that can be ...

earthquake.usgs.gov/learn/glossary/?term=Richter%20scale

Richter scale. The Richter magnitude scale was developed in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to ...

science.howstuffworks.com/nature/natural-disasters/earthquake6.htm

Whenever a major earthquake is in the news, you'll probably hear about its Richter scale rating. You might also hear about its Mercalli Scale rating, though this ...

www.geo.mtu.edu/UPSeis/intensity.html

There are a number of ways to measure the magnitude of an earthquake. The first widely-used method, the Richter scale, was developed by Charles F. Richter  ...

www.sms-tsunami-warning.com/pages/richter-scale

The Richter Magnitude Scale: Development, Details, Richter Magnitudes, Examples, Magnitude Formula, How it works, Richter Scale videos.

www.khanacademy.org/math/algebra2/exponential-and-logarithmic-functions/logarithmic-scale/v/richter-scale

Sal explains the basics of the Richter scale (Moment magnitude scale) and uses this to compare the magnitude of 4 famous earthquakes.

www.britannica.com/science/Richter-scale

Richter scale: Widely used quantitative measure of the magnitude of an earthquake, devised in 1935 by American seismologist Charles F. Richter. See table.

www.scientificamerican.com/article/how-was-the-richter-scale

William Menke, a seismologist at the Lamont-Doherty Earth Observatory of Columbia University, explains. The Richter scale was developed in 1935 by ...