Iron filings placed around two rectangular magnets with north and south ends. These magnets have been positioned to have their south and north ends facing each other to display magnetic attraction | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Science Source |
Taille de l’image : | 3872 px × 2592 px |
Model Release : | Non requis |
Restrictions : |
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