Photograph of a Leyden jar,the simplest and earliest form of capacitor (a device for storing electric charge). It consists of a glass jar with a layer of metal foil on the outside and a similar layer on the inside. Contact with the inner foil is via a central metal rod. The device is usually charged from an electrostatic generator. Now rarely used outside of the classroom,the Leyden jar was invented at the University of Leyden,in Holland,in 1746 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Taylor, David |
Taille de l’image : | 3567 px × 5089 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |