Three watch glasses,one containing iron filing,one containing fine sand and the other containing a mixture of iron and sand. This mixture is commonly used in classroom demonstrations of magnetism,as a magnet allows the separation of the iron and sand | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 4500 px × 4500 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |