This set of two electrostatic pompons demonstrates charge distribution and Coulomb repulsion. Each pompon consists of a metal rod mounted on an insulated plastic stand, carrying a round metal plate at its top and a fringe of 40 colored nylon cords. When the plate is touched with an electrostatically charged rod, the cords become charged and spread into a wide cone by mutual repulsion. The pompon is well insulated and holds its charge for up to 30 minutes in dry air. Each pompon measures 19.5 cm high with 12 cm long fringes, and the base is 10.5 cm in diameter. One pompon has black cords, the other white.