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In 132 BC, the first seismoscope was developed in China.
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On the 5th of may 1840, a man named David Milne recommended that a machine could be developed to measure seismic action
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On the 27th of March 1857, an Irish engineer and scientist named Robert Mallet studied and developed theories about earthquakes. Mallet's work created some of the earliest theories about seismology. He thought that an earthquake moved outward from a central focus point.
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On the 4th of May 1872, Grove Gilbert discovered that earthquakes usually occur around a fault line.
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In 1875 the first seismometer in Italy was invested, by Fillippo Cecchi. Fillippo Cecchi was an expert physicist and a capable creator of scientific instruments.
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In 1889 the first distant earthquake was in Japan and the recording was in Germany.
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In 1892 John Milne devoloped a Seismometer. The Seismometer was introduced in around 40 perceptions starting the worldwide earthquake observing .
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On the 10th of February 1897, the first seismograph got installed in the U.S. It was installed near San Francisco at the Lick Observatory.
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Giuseppe Mercalli was a Seismologist. On the 12 of April 1906 he made a gadget to quantify the power or probability of harm that might be brought on by an earthquake.
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On the 4th of December 1906, a major earthquake caused by San Andreas fault, that caused 3,000 deaths. It was the destruction of San Francisco.
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On the 20th of December 1906, Harry Reid hypothesized that earthquakes were likely the consequence of the development of pressure along deficiencies.
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In 1906, Richard Oldham discovered the earth's core by studying seismic waves.
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on the 18th of December of 1909, a boundary between the earth's crust and mantle was discovered by Andrija Mohorovicic.
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In 1909 Andrija Mohorovicis discovered the Moho discontinuity. The moho discontinuity is the boundary between the Earth's crust and the Earth's Mantle.
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In 1935, the magnitude sale got developed by Charles Richter.
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On the 30th December 1935, Charles Richter created the first seismograph. He used the Richter scale to measure the magnitude of earthquakes.
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In 1936, Inge Lehmann discovered the earth's inner core.
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In 1946, a nuclear explosion was recorded by a seismograph.
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In 1960, the largest recorded earthquake was in Chile.
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In 1961, the world wide Standardized Seismic Network was established.
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In 1966, Keiiti Aki defined seismic moment.
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In 1969, Apollo astronauts placed a seismometer on the moon
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In 1977, Hiroo Kanamori established the moment magnitude scale.
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In 1996, the comprehensive nuclear test ban, treaty is established.
