Magnetising a needle. Boy holding a bar magnet and drawing a large sewing needle along the bottom of the magnet to magnetize the needle. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / DK IMAGES |
Taille de l’image : | 3533 px × 2968 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |