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A miniature model of Su Song's clock was reconstructed by John Cambridge and is now on display at the National Science Museum at South Kensington, London. [15] In China, the clocktower was reconstructed to one-fifth its actual scale by Wang Zhenduo, who worked for the Chinese Historical Museum in Beijing in the 1950s. [70]
The original diagram of the book by Su Song in 1092, showing the inner workings of his clock tower, with the clepsydra tank, a waterwheel with scoops and the escapement, a chain drive, the armillary sphere crowning the top, and the rotating wheel with clock jacks that sounded the hours with bells, gongs, and drums.
Su Song is noted for having incorporated an escapement mechanism and the earliest known endless power-transmitting chain drive for his clock-tower and armillary sphere to function. Contemporary Muslim astronomers and engineers also constructed a variety of highly accurate astronomical clocks for use in their observatories , [ 3 ] [ 4 ] [ 5 ...
The later Song dynasty historical text of the Song Shi (compiled in 1345 AD) records Zhang's work (Wade-Giles spelling): . At the beginning of the Thai-Phing Hsing-Kuo reign-period (+976) the Szechuanese Chang Ssu-Hsun [Zhang Sixun], a student in the Bureau of Astronomy, invented an astronomical clock (lit. armillary sphere, hun i) and presented the designs to the emperor Thai Tsung, who ...
Su Song (1020–1101 AD) was a renowned Chinese statesman, astronomer, cartographer, horologist, pharmacologist, mineralogist, zoologist, botanist, mechanical and architectural engineer, and ambassador of the Song Dynasty. Su Song was the engineer of a water-driven astronomical clock tower in medieval Kaifeng depicted in his horological ...
Su Song's clock tower, over 30 feet (9.1 m) tall, possessed a bronze power-driven armillary sphere for observations, an automatically rotating celestial globe, and five front panels with doors that permitted the viewing of changing mannequins which rang bells or gongs, and held tablets indicating the hour or other special times of the day.
Su Song invents the astronomical clock [88] 1088: Song and the Lý of Đại Việt finalize their border agreement, which with minor changes throughout the centuries, is basically the same as the modern China–Vietnam border [89] 1089: Song and Western Xia conclude a peace treaty [90]
The famous clock tower that the Chinese polymath Su Song built by 1094 during the Song dynasty would employ Yi Xing's escapement with waterwheel scoops filled by clepsydra drip, and powered a crowning armillary sphere, a central celestial globe, and mechanically operated manikins that would exit mechanically opened doors of the clock tower at ...