Zhang Heng: Ancient China's Genius Inventor Explained
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YouTubeScience·WHYS
Zhang Heng, a renowned astronomer and mathematician of the Han Dynasty, presented his seismoscope to the imperial court. The device's internal mechanism, though its exact design remains debated, was sensitive enough to detect a significant earthquake hundreds of miles away in what is now Gansu province, while people in the capital Luoyang felt nothing. A ball dropped from a dragon facing west, correctly indicating the direction of the quake. This feat demonstrated an advanced understanding of se
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Zhang Heng, a renowned astronomer and mathematician of …
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