Scholar-official / engineer
Su Song
Song dynasty polymath who led construction of a water-driven astronomical clock tower.
Completed around 1092 and described in the Xin Yixiang Fayao, the tower combined an armillary sphere, celestial globe and time-announcing figures, regulated by a waterwheel escapement.
- Country
- China
- City
- Kaifeng
- Founded / active
- 1020–1101
- Status
- Historical individual
- Key people
- Su Song, Han Gonglian
Innovations
- Waterwheel-linkwork escapement
- Chain drive
