A polarized metal ring jumps up off of an electromagnet. When a current is applied to a coil of conductive metal,it becomes a magnet | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Winters, Charles D. |
Bildgröße: | 1312 px × 2000 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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