Electromagnetic field demonstration. Iron filings placed on a card beneath a rudimentary electromagnetic composed of a copper coil around two metal bars carrying a current. The shape of the magnetic field is revealed by the pattern of the filings | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Trevor Clifford Photography |
Bildgröße: | 5125 px × 3431 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |