Universal joint invented by Robert Hooke, 1676. Hooke (1635-1703) devised this joint to allow directional movement of astronomical instruments. From A Description of Helioscopes by Robert Hooke. (London, 1676). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Oxford Science Archive |
Bildgröße: | 4473 px × 3904 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |