First, place the child on a point in the carousel and fasten the electrically charged ball someplace on the child, without loss of charge. Allow the child to spin on its own axis at a rate that is impossible for a solid object. Place the magnet at a non-origin location of stationary pillar of the carousel. Allow the carousel to enter into motion. The movement of the carousel and the child constitutes the total angular momentum J of the charged ball. Now, rotate the pillar of the carousel while holding the magnetometer. The flux of the magnetic field behaves as the spin I of the nucleus, the total coupling between the magnetism and the charged ball and the constituent deviation from the energy of the total angular momentum motion of the charged ball is the hyperfine contribution.