Su Song Star Map 1, Song dynasty - Public domain old map
This is a star map for the celestial globe of Su Song (1020-1101), a Chinese scientist and mechanical engineer of the Song Dynasty (960-1279). It was first published in the year 1092, in Su's book known as the ... More
Su Song Star Map 2 - Public domain geographic map
A star map of the south polar projection found for the celestial globe of Su Song (1020-1101), a Chinese scientist and mechanical engineer of the Song Dynasty (960-1279). This diagram of a star chart was first ... More
YANG HUI 10 X 10 MAGIC SQUARE, Song dynasty
Yang Hui 10x10 magic square 中文（简体）: 杨辉百子图幻方
YANG HUI 9X9 MAGIC SQUARE, Song dynasty
Yang Hui 9x9 magic square 中文（简体）: 杨辉 九九幻方图
Shu Shu Jiu Zhang skqs, Song dynasty
A page of Shu Shu Jiu Zhang 四库全书数书九章
Shu Shu Jiu Zhang 18 volumes
Shu Shu Jiu Zhang 18 volumes Public domain image related to Chinese history, government, and politics, free to use, no copyright restrictions image - Picryl description
Triangle area from 3 sides
Triangle area from three sides 数书九章 三斜求积