19th Century electrostatic generator. Historical image of a man seated next to a Holtz electrostatic influence machine. This device was an electrostatic induction generator that converted mechanical work into electrostatic energy,and only needed an initial charge to begin operation. It was invented by Wilhelm Holtz in 1865,and was the first really powerful influence machine to be developed. Photographed in 1876 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Library of Congress |
Taille de l’image : | 3139 px × 3543 px |
Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
Property Release : | Non requis |
Restrictions : |
|