Magnetism. Safety pins,which are made of steel,being attracted to a bar magnet. The magnetic field of the magnet induces a small magnetic field in the steel pins,and the opposite magnetic poles than attract each other. The pins will remain magnetised for a time after the bar magnet has been removed | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Molloy, Cordelia |
Bildgröße: | 3610 px × 4899 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |