2C20.70 - Bjerknes' Tube

Bjerknes' tube


PIRA Classification: 2C20.70

Description: The core from a roll of paper towels is wrapped with a string near the center. At the other end of the string is a loop with a meter stick inserted. When the meter stick is quickly jerked, the tube leaves the table and follows a loop-the-loop path.

Special Instructions: This is tough. PRACTICE.

Condition: Ok

Setup time: 1 minute

Safety Issues: None