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Correspondingly, why is Zhang Heng important?
? (78-139 AD) He is one of a long line of astronomers who served the emperors through the various dynasties. Astronomers served an important function of State by creating and maintaining calendars, making predictions concerning celestial events, and keeping records of the events observed in the heavens.
Also, how did Zhang Heng view space? Zhang Heng is the first person known to have applied hydraulic motive power (i.e. by employing a waterwheel and clepsydra) to rotate an armillary sphere, an astronomical instrument representing the celestial sphere. The Greek astronomer Eratosthenes (276–194 BC) invented the first armillary sphere in 255 BC.
Also to know is, what did Zhang Heng invent?
How old is Zhang Heng?
61 years (78 AD–139 AD)