Zhang Heng
Channel: Ananas Science
Date: 26/02/2017

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Zhang Heng, formerly romanized as Chang Heng. (AD 78–139) was a Han Chinese polymath from Nanyang who lived during the Han dynasty. Educated in the capital cities of Luoyang and Chang'an, he achieved success as an astronomer, mathematician, scientist, engineer, inventor, geographer, cartographer, artist, poet, statesman, and literary scholar. 

TABLE OF CONTENTS:
0.  Introduction (00:00:00)
1.  Life (00:02:08)
............1.1.  Early life (00:02:09)
............1.2.  Official career (00:04:21)
2.  Literature and poetry (00:09:49)
3.  Achievements in science and technology (00:17:50)
............3.1.  Astronomy and mathematics (00:17:53)
............3.2.  Extra tank for inflow clepsydra (00:22:32)
............3.3.  Water-powered armillary sphere (00:25:03)
............3.4.  Zhang's seismoscope (00:30:21)
............3.5.  Cartography (00:38:24)
............3.6.  Odometer and south-pointing chariot (00:40:07)
4.  Legacy (00:42:19)
............4.1.  Science and technology (00:42:20)
............4.2.  Poetic literature (00:45:30)
............4.3.  Posthumous honors (00:46:20)

Source: https://en.wikipedia.org/wiki/Zhang_Heng
Date: 02/25/2017

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