2000-Year-Old Earthquake Detector Worked With Accuracy in China – The Epoch Times

2000-Year-Old Earthquake Detector Worked With Accuracy in China
The Epoch Times
The most common theory states that a pendulum inside the copper urn would move when an earthquake occurred, even if the quake was hundreds of miles away. The pendulum would hit a system of levers to open the mouth of one of the eight dragons on the …

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Source: Earthquake News From Google News

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