Two horizontal water wheels, 1673. The left-hand wheel with highly curved blades, an early form of turbine, was more efficient than the one with flat blades on the right. From Theatrum Machinarum Novum by Georg Andreas Bockler. (Nuremberg, 1673). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Oxford Science Archive |
Bildgröße: | 2830 px × 3704 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |