| Armillary Sphere and Theory of Celestial Sphere |
 |
| Armillary Sphere and Theory of Celestial Sphere - In DongHan Dynasty, Luoxiahong, a man of Sichuan, established stellar observatory, the oldest in our country, which was located in Panlong Mountain at the north of his hometown Langzhong, and he invented the first armillary sphere in the world, laying the earliest fundament for theory of celestial sphere. In addition, he compiled the first calendar with specific literal recordation in Chinese history, Taichu Calendar. |
|
|
|
|
|
