Hooke's lens polishing machine,1665

Numéro d’image : 11664839
Hooke's lens polishing machine,1665
Lens polishing machine. Illustration of a lens polishing machine from 'Micrographia' (1665) written by British physicist Robert Hooke (1635-1703). In this machine,the glass blank (marked 'Q') was set against the grinding tool (marked 'K'). The grinding tool was rotated by a lower mechanism which was turned by a wheel (marked 'H'). The position of the blank was adjusted by a lever and screw mechanism (at upper left). Hooke used lenses like this in the compound microscope he first described in 'Micrographia'. The compound microscope was an improvement over previous designs and allowed Hooke to be the first to see plant cells in thin slices of cork
Licence : Droits gérés
Crédit: Science Photo Library / British Library
Taille de l’image : 3462 px × 5261 px
Model Release : Non requis
Property Release : Non requis
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