Horseshoe magnet with various magnetic and non- magnetic objects. Ferrous objects such as a knife and screw are temporarily magnetised by a permanent iron magnet. An aluminium can and other non-metallic objects are left unaffected. Magnetism is mostly a property of metals. It is a force exerted at a distance through a field,generated by moving electric charge (electrons). It can attract or repel | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Andrew Lambert Photography |
Taille de l’image : | 3574 px × 4909 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |