Description
Produce net charge by rubbing a rubber rod with a piece of rabbit fur; or an acrylic rod with cellophane; or a glass rod with silk. Use an electroscope as a charge indicator.
NOTE: If irregularities are observed in the interactions of the charged objects, it is recommended that all synthetic, including black carts, materials involved be rinsed off with water or wiped down with a wet cloth.
VARIATION: Instead of the rubber rod, use a piece of amber.

Equipment
PVC Rod, felt, rubber rod, rabbit fur, Acrylic rod and/ or cellophane; Gold leaf electroscope, probe electroscope and/ or overhead electroscope
Support Equipment
Overhead projector for the overhead electroscope