1. Electrostatic charge can be produced through induction.
2. Production of electrostatic charge is cyclical, and production could be automatically carried out by a properly designed machine.
|1. Charge hard rubber base by rubbing with fur.||No observable result|
1. Set thick disk down on base.
2. Touch base with hand
3. Lift disk off base by holding rubber handle.
4. Touch base again.
|Spark is produced|
1. Repeat previous set of steps multiple times.
|Spark does not diminish in intensity.|