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4 magg 132 anni - Earthquake Detector was invented

Descrizione:

According to court records of the later Han Dynasty, a seismograph was created by the brilliant inventor Zhang Heng (78-140 AD) in
132 AD. Its function is to determine the direction of an earthquake. In 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. Modern seismographs only began development in 1848 in Europe.

Aggiunto al nastro di tempo:

10 ott 2017
0
0
418

Data:

4 magg 132 anni
Adesso
~ 1894 years ago

Immagini: