For decades, China’s middle school students were introduced to the world’s first seismograph through an image in their history textbooks: a large, bronze urn with eight dragons perched the same ...

Chinese seismologists and archeologists have announced that they have created a replica of Didong Yi, the world's first seismograph. The announcement in Zhengzhou, capital of central China's Henan ...

Seismograph invented by Chinese ancient Zhang Heng from Eastern Han Dyansty.[File photo] Fang Zhouzi has questioned if the primitive seismograph invented by Zhang Heng from the Eastern Han Dynasty ...

Then: replica of Zhang Heng's seismographNearly 2,000 years ago, in 132, a Chinese scientist named Zhang Heng invented the world's first seismograph, an instrument to detect earthquakes.

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ZHENGZHOU - Henan province in Central China is preparing to open an earthquake ... scientist who invented a seismograph. Construction of the Zhang Heng Seismostation started in July 2015 at ...