What did Su Song invent?

Su Song presided over the establishment of the Waterway Observatory, which was an outstanding astronomical instrument in China at the end of1/kloc-0 and the oldest astronomical clock in the world. There is a high evaluation on the design of the water transport platform in the world. It is believed that the water transport platform has designed a movable roof for the convenience of observation, which is the ancestor of the movable dome of today's observatory.

The elephant rotates once a day and night, which not only vividly shows the changes of astronomical phenomena, but also is the ancestor of the rotating clock, a tracking instrument of modern astronomical observatory. The escapement mechanism pioneered by the waterway instrument platform is the key component of the later clocks, so it is the ancestor of the clocks. The application of ancient mechanics knowledge in China has reached a quite high level.

Su Song and Han Gonglian, after completing the platform of water transport instrument, independently developed the hydraulic muddy astronomical phenomena. People drill into the celestial sphere to watch, and drill holes in the celestial sphere into stars, which is very realistic. This is the first clearly recorded false celestial phenomenon in the history of China, and its creativity is unprecedented.

Extended data;

In Li Qing's second year in Song Renzong (1042), Su Song joined the famous reformer Wang Anshi as a scholar. After more than 50 years in politics, from local officials to central officials, he was an important minister of Renzong, Yingzong, Zongshen, Zhezong and Hui Zong in the Northern Song Dynasty. At the age of 73, he was honored as Prime Minister.

He is a good minister who is loyal to the monarch and patriotic, noble in moral character, honest and upright, steady and practical. Su Song Yu Jianzhong Jing Guoyuan was born in Runzhou in May, at the age of 82. He dropped out of school for three days and gave a gift to Wei Gong, so the chronicles of past dynasties called it "Su Wei State" and pursued "Jian Zheng".

Throughout his life, Su Song was not only an outstanding politician, diplomat, writer and historian, but also a little-known scientist, who created many world firsts for the Chinese nation.

Su Song's achievements are remarkable, and he loves the people like a son. When he was the magistrate of Jiangning County, Jiangsu Province, he investigated the tax evasion of wealthy rural households, approved production quotas, compiled household registration and collected taxes one by one, which not only increased the national treasury income, but also reduced the burden on the poor. Staying in Nanjing won the esteem of Ouyang Xiu, the chief executive, and praised him as "fine".

Reference source; Baidu Encyclopedia-Su Song