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In the history of the innovations surrounding earthquake study, we have to look at two things: the devices that recorded earthquake activity and the measurement systems written to help interpret that data. For example: the Richter Scale is not a physical device, it is a mathematical formula.
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inventors.about.com/od/sstartinventions/a/seismograph.h...
inventors.about.com/od/sstartinventions/a/seismograph.htm
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Richter magnitude scale - Wikipedia, the free encyclopedia
The Richter magnitude scale , also known as the local magnitude ( M_L ) scale , assigns a single number to quantify the amount of seismic energy released by an earthquake. It is a base...
en.wikipedia.org/wiki/Richter_magnitude_scale
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The Richter magnitude scale was developed in 1935 by Charles F. Richter of the California Institute of Technology. The mathematical device is used to compare the size earthquakes. On the Richter Scale, the magnitude of quake is expressed in whole numbers and decimal fractions. ... Home Page; Members; History Newsletter;
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www.on-this-day.com/onthisday/docs/assorted/richterscal...
www.on-this-day.com/onthisday/docs/assorted/richterscale.htm
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The largest earthquake recorded in history 95 on Richter scale happened in 1960 in what country - trivia question /questions answer / answers ... The largest earthquake recorded in history, 9.5 on Richter scale, happened in 1960 in what country?
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www.funtrivia.com/askft/Question63269.html
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Article abstract: Richter devised a scale for measuring the strength of earthquakes based on their seismograph recordings. ... Get help in the History Group...
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www.enotes.com/salem-history/richter-develops-scale-for...
www.enotes.com/salem-history/richter-develops-scale-for-measuring-earthquake
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Richter Scale; Richter scale is a method of characterizing, in other words ranking the size / strength of earthquake. In 1935, an American Seismologist Charles F. Richter devised Richter scale, also known as the local magnitude scale.
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www.wisedude.com/science_engineering/earthquakes.htm
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The recent Los Angeles quake measured 6.6 on the Richter Scale. The biggest quakes in history include a 1960 quake in Chile and the Indian Ocean quake in 2004 which caused a devastating tsunami. Each of these measured about 9.0 on the Richter Scale.
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www2.scholastic.com/browse/article.jsp?id=4892
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The Intensity Scale differs from the Richter Magnitude Scale in that the effects of any one earthquake vary greatly from place to place, so there may be many Intensity values (e.g.: IV, VII) measured from one earthquake. ... Such research helps promote our understanding of the earthquake history of a region,
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www.seismo.unr.edu/ftp/pub/louie/class/100/mercalli.htm...
www.seismo.unr.edu/ftp/pub/louie/class/100/mercalli.html
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For decades, the Richter Scale proved to be the accepted measurement for earthquakes. In recent years, scientists have begun to use the Moment Magnitude Scale, which is much more precise than the Richter Scale. ... If you found this entry helpful, please consider supporting Ohio History Central. Your support will enable us...
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www.ohiohistorycentral.org/entry.php?rec=2726
www.ohiohistorycentral.org/entry.php?rec=2726
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