A rotating apparatus includes a separating member, at least one movable
magnet, and at least one passive magnet. The separating member is made of
a nonmagnetic material, and interposed between the movable magnet and the
passive magnet. The movable magnet is relatively shifted from the
separating member along one surface of the separating member, and N-pole
and S-pole of the movable magnet are arranged along the one surface of
the separating member. The passive magnet is placed on the other surface
of the separating member, and coupled with the movable magnet by magnetic
force. When the movable magnet and the separating member are shifted
relatively to each other, the passive magnet is shifted along the movable
magnet and rotated on the other surface of the separating member.