Magnetic field. Iron filings aligned along the magnetic field lines surrounding a bar magnet. The poles are marked north (N) and south (S). The magnetic field induces magnetism in the needle-shaped filings,giving each a north and south pole. The magnetised filings align in thin arcing lines due to the interactions between them,even though the magnetic field itself is continuous. Magnetism is a property of ferromagnetic metals (such as iron,nickel and cobalt) caused by the alignment of the spins of the electrons in the metal | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Molloy, Cordelia |
Taille de l’image : | 3460 px × 5064 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |