Biography zhang heng
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Zhang Heng
Zhang Heng | |
|---|---|
A stamp of Zhang Heng issued by China Post in 1955 | |
| Born | AD 78 Nanyang, China |
| Died | AD 139 (aged 60–61) Luoyang, China |
| Known for | Seismometer, hydraulic-poweredarmillary sphere, pi calculation, poetry, universe model, lunar eclipse and solar eclipse theory |
| Scientific career | |
| Fields | Astronomy, mathematics, seismology, hydraulics, geography, ethnography, mechanical engineering, calendrical science, metaphysics, poetry |
Zhang Heng (also written Chang Heng, simplified Chinese: 张衡; traditional Chinese: 張衡; pinyin: Zhāng Héng; AD 78–139) was a Chinesescientist who worked in many subjects.
He lived during the Han dynasty. He was an accomplished engineer, meteorologist, geologist, philosopher, mathematician, astronomer and writer.
Biography zhang heng
Zhang invented the first seismometer, a machine that measures the strength of earthquakes. He is remembered for many other inventions and writings. He invented th