File:Clock Tower from Su Song's Book.JPG
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DescriptionClock Tower from Su Song's Book.JPG | Chinese mechanical and horological engineering from the Song Dynasty; this diagram provides an overall general view of the inner workings and armillary sphere of Su Song's clocktower built in Kaifeng. The drawn illustration comes from Su Song's book Xin Yi Xiang Fa Yao published in the year 1092. On the right is the upper reservoir tank with the 'constant-level tank' beneath it. In the center foreground is the 'earth horizon' box in which the celestial globe was mounted. Below that are the time keeping shaft and wheels supported by a mortar-shaped end-bearing. Behind this is the main driving wheel with its spokes and scoops. Above that are the left and right upper locks with an upper balancing lever and upper link. |
Date | |
Source | Page 451 of Joseph Needham's book Science and Civilization in China: Volume 4, Part 2, Mechanical Engineering. |
Author | PericlesofAthens |
This is a faithful photographic reproduction of a two-dimensional, public domain work of art. The work of art itself is in the public domain for the following reason:
The official position taken by the Wikimedia Foundation is that "faithful reproductions of two-dimensional public domain works of art are public domain".
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:21, 15 October 2017 | 1,051 × 1,392 (499 KB) | Aubry Gérard (talk | contribs) | Netteté, nettoyage | |
08:21, 17 March 2016 | 908 × 1,366 (776 KB) | PawełMM (talk | contribs) | cleaned, contrast enhanced, desaturated | ||
16:56, 14 August 2007 | 908 × 1,366 (722 KB) | PericlesofAthens (talk | contribs) | {{Information |Description=Chinese mechanical and horological engineering from the Song Dynasty; this diagram provides an overall general view of the inner workings and armillary sphere of Su Song's clocktower built in Kaifeng. The drawn illustration come |
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