Experiment using cathode ray tube and battery,showing downward deflection by magnetic field | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Dorling Kindersley / UIG |
Taille de l’image : | 3701 px × 4722 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |