Perpetual motion: Grindstone driven,via work and spur,by an overshot water wheel. An Archimedean screw raises the used water to the reservoir,and the whole is supposed to work by perpetual motion. Engraving from Theatrum Machinarum Novum by George Andreas Bockler (Nuremberg,1673) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / UIG / Universal History Archive |
Taille de l’image : | 5248 px × 6659 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |