WORLD RICHTER SCALE DAY

Born 26 Apr 1900; died 30 Sep 1985 at age 85.

Charles Francis Richter was an #American #seismologist who devised the #RichterScale that measures #earthquake #magnitudes which he developed with his colleague, Beno Gutenberg, in the early 1930s.

The scale assigns numerical #ratings to the #energy released by earthquakes.

Richter used a #seismograph to record actual #earthmotion during an earthquake. That is an instrument generally consisting of a constantly unwinding roll of paper, anchored to a fixed place, and a #pendulum or #magnet suspended with a marking device above the roll. The scale takes into account the instrument's distance from the #epicenter.

Gutenberg suggested that the scale be #logarithmic so, for example, a quake of magnitude 7 would be ten times stronger than a 6.

He wrote the article on Earthquakes for the 1974 edition of #Encyclopædia Britannica.

www.masterdoctorclinic.com