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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/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 ...

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 ...

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

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.

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.britannica.com/science/Richter-scale

Sep 27, 2017 ... Richter scale (ML): Richter scale, widely used quantitative measure of an earthquake's magnitude.

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.geo.mtu.edu/UPSeis/magnitude.html

Earthquake Magnitude Scale. Magnitude, Earthquake Effects, Estimated Number Each Year. 2.5 or less, Usually not felt, but can be recorded by seismograph.

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