Astrolabe, Arabian navigational instrument, 11th century. An astrolabe was an ancient navigational instrument, forerunner of the sextant, to fix the position of a star. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Oxford Science Archive |
Bildgröße: | 3590 px × 4866 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |