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Zhang Heng's old instruments were recovered in 418, when Emperor Wu of Liu Song (r. 420–422) captured the ancient capital of Chang'an. Although still intact, the graduation marks and the representations of the stars, Moon, Sun, and planets were quite worn down by time and rust. [81]
Sep 13, 2017 · Zhang Heng is the first person known to have applied hydraulic motive power (i.e. by employing a waterwheel and clepsydra, or water clock) to rotate an armillary sphere — an astronomical instrument representing the celestial sphere.
- Ancient-Origins
Zhang Heng was a Chinese mathematician, astronomer, and geographer. His seismoscope for registering earthquakes was apparently cylindrical in shape, with eight dragons’ heads arranged around its upper circumference, each with a ball in its mouth.
- The Editors of Encyclopaedia Britannica
Mar 10, 2023 · Zhang Heng introduced the imperial court of China to his device (known as Houfeng Didong Yi) in 132 AD and proclaimed that the urn could detect the exact cardinal direction a distant earthquake came from. Unfortunately, the seismoscope was lost to time, and no illustrations were made to demonstrate the device’s inner and outer workings.
- Lauren Dillon
Jan 19, 2017 · Being an engineer in Han China wasn't particularly easy and Zhang Heng's firm scientific principles made it even harder. Firstly, climbing the Imperial greasy pole in first-century China required many more skills than simply engineering.
Feb 9, 2019 · In 132 CE, inventor, Imperial Historian, and Royal Astronomer Zhang Heng displayed his amazing earthquake-detection machine, or seismoscope, at the court of the Han Dynasty. Zhang's seismoscope was a giant bronze vessel, resembling a barrel almost 6 feet in diameter.
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Jun 3, 2021 · In ancient China, Yi was commonly related to Biao, the dial plate in literal meaning. In Zhang Heng’s invention, a telescope replaced the aiming machine and the name Yi was kept. And as time goes by, nowadays Yi is used in instruments.
