To demonstrate the magnetic field line. Iron filling filled with silicon oil in a flat and transparent box which allows students to visualize the field of a small magnet.
To demonstrate the magnetic field line. Iron filling filled with silicon oil in a flat and transparent box which allows students to visualize the field of a small magnet.
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To demonstrate the magnetic field line. Iron filling filled with silicon oil in a flat and transparent box which allows students to visualize the field of a small magnet.