PIRA Classification: 5E60.25
Description: Cellophane is wrapped around nylon strings and pulled down. The strings repel each other. A gun, containing a piezoelectric crystal, is aimed at the string. Pulling the trigger causes the gun to emit positive ions. Negative ions are emitted when the trigger is released. When the trigger is released, the strings relax.
Special Instructions: None
Condition: Good
Setup time: 1 minute
Safety Issues: None