CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY
Magnet attracting ferromagnetic objects. Ferromagnetic materials are amongst the most susceptible to magnetism. When in a magnetic field, magnetism is induced and they themselves become magnetic. Some of the most common ferromagnetic materials are iron, nickel and cobalt. The objects in the image have been blurred to indicate movement.
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