Zhang Heng invented the world’s first water-powered armillary sphere and the world’s first seismometer.
Zhang Heng invented the world’s first water-powered armillary sphere and the world’s first seismometer.
What was invented by Zhang Heng to detect a distant earthquake? A: star catalogue B: seismometer C: sundial D: compass
What was invented by Zhang Heng to detect a distant earthquake? A: star catalogue B: seismometer C: sundial D: compass
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