A bronze bust of the Chinese astronomer Guo Shoujing (1231-1316) at the Beijing Ancient Observatory, an astronomical observatory that dates from the 1400s. According to an accompanying plaque, he devised a number of astronomical instruments, established several observatories and formulated the Shoushi Calendar which determined the year to be 365.2425 days. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Williamson, Mark |
Taille de l’image : | 3408 px × 5128 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |