Elephant clock invention, 14th century. Every half hour, the bird on the dome whistled; the man below dropped a ball into the dragon's mouth; and the driver hit the elephant with his goad. Invention from a 1315 edition of 'Book of the Knowledge of Ingenious Mechanical Devices' by Islamic scholar Ismail al-Jazari. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Metropolitan Museum Of Art |
Bildgröße: | 2657 px × 3963 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |