Specifications: This apparatus is used for the study of magnetic field and magnet poles which has a repellent force on each other. The users can observe the swing which the force has to be applied only once, but the swing will keep swinging continuously which is caused by the repellent force created by the magnets and the magnetic field. This apparatus is built on a triangular base with dimensions 32x32x10cm. It is made of MDF wood closed with Formica plastic.