Magnetite crystals. Magnetite is an iron oxide (Fe3O4). Naturally occurring magnetite is the strongest magnetic mineral on Earth. Pieces of natural magnetite were known as lodestones and were used by ancient peoples as early forms of magnetic compass. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA |
Modell-Rechte: | nicht erforderlich |
Länge: | 32 Sekunden |
Seitenverhältnis: | 16:9 |
Restrictions: | - |