Question

Who invented the seismograph?

Answer 1

Chang Heng of China invented seismograph

Answer 2

Zhang Heng (Chang Heng)
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Zhang Heng (Chang Heng) invented and constructed the first seismograph in A.D. 132.

Zhang Heng was a Chinese astronomer, mathematician, scientist, engineer, inventor, geographer, cartographer, artist, poet, statesman and literary scholar and is known for seismometer, hydraulic-powered armillary sphere, pi calculation, poetry, universe model, lunar eclipse and solar eclipse theory.

Seismograph is an instrument that measures, registers and records and records the details and features of earthquakes.