To study Coulomb's law, we charge up a six-inch diameter sphere mounted on a long horizontal nylon rod. We use a demonstration Van de Graaf to charge the sphere. The charged sphere is then used to charge a half-inch diameter graphite-coated pith ball, which is suspended with a V-shaped bifilar suspension of nylon thread. The length of the suspension is at least a meter. Measurements of the position and the deflection of the pith ball and the sphere are made on the shadows they produce in the light from a distant source. It is possible to measure the deflections as the distance between centers is varied from over a meter to about 15 cm. By removing half the charge from the sphere by touching it with a sphere of equal diameter, one can study the effect of the charge on the Coulomb force.