Chinese inventor created world’s first earthquake detector 2000 years ago

News 12/16/21, 17:11

Zhang Heng, a Chinese astronomer, mathematician, engineer, and inventor, made the first seismometer or earthquake detector in AD 132. He lived between 25 and 220 AD during the Han Dynasty. Zhang is known for developing the world's first water-powered armillary sphere for astronomical observation and improving the water clock and cataloging ...

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