A horseshoe magnet is used to test nickel and copper for magnetism. Nickel is magnetic while copper is not | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 5132 px × 3417 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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