Needles of small compasses align along electromagnet field lines around a coiled wire. In this image, the electricity is off. See photo SS21333271 for image with coil on. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Science Source / Alexandre Dotta |
Taille de l’image : | 3900 px × 3396 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |