One of several historical Chinese astronomical instruments at the Beijing Ancient Observatory in Beijing, China, an astronomical observatory that dates from the 1400s. The sundial (1790) was designed primarily to determine the time according to the sun. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Williamson, Mark |
Bildgröße: | 3408 px × 5128 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |