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). | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Heritage Images / Oxford Science Archive |
Taille de l’image : | 4473 px × 3904 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |