Happy National Richter scale Day! On April 26 each year, today honors the birth of American seismologist and physicist Charles F. Richter (April 26, 1900 – September 30, 1985).
Richter was most famous as the inventor of the Richter magnitude scale, which quantified the size of earthquakes.
It wasn't Until the development of the moment magnitude scale in 1979 that the Richter scale quantified the size of earthquakes.
While working at the California Institute of Technology, with Beno Gutenberg, Richter first used the scale in 1935.
After publishing the Richter Scale in 1935, it immediately became the standard measure of earthquake intensity.
Since that year, there have been other magnitude scales developed. Depending on the data available, different scales are used. However, most are not as popularly known as Richter Scale.
The United States Geological Survey records show that the most significant earthquake since 1900, was in Chile in May 1960.
Measuring 9.5 on the Richter Scale, it is known as the Great Chilean Earthquake!
Visiting the website below, here of the ten largest earthquakes:
HOW TO OBSERVE
Learn more about earthquake activity. Watch a documentary or read a book about Charles F. Richter and his invention. Use #NationalRichterScaleDay to post on social media.
HISTORY
Although the day commemorates the birth of Charles F. Richter, National Day Calendar® continues researching the founders of this seismic holiday.
#NationalRichterScaleDay
@USGeologicalSurvey
@nichecinema
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