Magnetism. Iron filings attracted to one of the poles of a bar magnet. They form spikes,following the direction of its magnetic field | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Andrew Lambert Photography |
Taille de l’image : | 3615 px × 4859 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |