Magnetic attraction. Pins clinging to a horseshoe magnet. Magnetism is a manifestation of electromagnetism,one of the fundamental forces of physics. The magnetic force is generated by moving subatomic particles called electrons. All materials have magnetic properties but metals can produce particularly strong magnetic fields because their electrons flow freely | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Molloy, Cordelia |
Taille de l’image : | 5019 px × 3853 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |