19th Century induction coil. Illustration of an electrical coil inductor (Ruhmkorff coil) with a Foucault switch, as designed by the German instrument maker Heinrich Daniel Ruhmkorff (1803-1877). Published in 'Physique populaire' by Emile Desbeaux (1891). | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Collection Abecasis |
Taille de l’image : | 3898 px × 2463 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |