| Compass and magnet. The compass has a free-swinging magnetic needle (green) pointing to a dial. The needle will normally align itself with the local lines of magnetic force to indicate the direction of the Earth's north and south magnetic poles. However,a nearby magnet provides a stronger local magnetic influence than that of the Earth,and the needle lines up with the magnet's field,the north of the needle being repelled by the north pole of the magnet | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Molloy, Cordelia |
| Bildgröße: | 6133 px × 4094 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |