Horseshoe magnet attracting metallic dust

Credit: K.GLASER/CUSTOM MEDICAL STOCK PHOTO/ SCIENCE PHOTO LIBRARY

Caption: Magnetism. View of a boy's hands holding a horse- shoe magnet which is attracting metallic dust and filings. The magnetic field of the magnet induces magnetism in each of the filings, which then line up in the field. Magnetic objects are mainly composed of ferromagnetic elements such as iron, cobalt and nickel. They have the capability to retain a degree of magnetization once exposed to an external magnetic field.

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Keywords: attraction, ferromagnetic elements, horseshoe magnet, magnetic, magnetism, physics

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