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may 26, 132 - earthquake decetppr

Description:

The first seismograph was created by Zhang Heng (78-140 AD) in 132 AD. Its function is to determine the direction of an earthquake. 138 AD, this instrument indicated an earthquake occurring in Longxi a thousand kilometers away. It was the first time that mankind to detect an earthquake.

Added to timeline:

24 Oct 2017
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0
244
9 Chinese inventions

Date:

may 26, 132
Now
~ 1887 years ago
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