Ferromagnetism

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Video Index

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  • Ferromagnetism Showing the strength of the attraction between ferromagnetic materials and magnetic fields using a 15Kg metal bar which is sucked into the magnetic field of a solenoid. Illustrating the concept of ferromagnetic domains using an array of compass needles.
  • Ferromagnetic Domains
    Hearing the domains in a ferromagnetic material flip by connecting an amplifier to a solenoid wrapped around the ferromagnetic material and then approaching it with a magnet.
  • Curie Point for Iron
    Showing that an iron washer is no longer attracted to a magnet when heated above the Curie point for iron.
  • Liquid Oxygen
    Showing that liquid oxygen, although paramagnetic, will be attracted to a strong magnet.

Course: 8.02 Electricity and Magnetism, Spring 2002

Instructor: Prof. Walter Lewin