A ferrite rod is placed at the bottom end of a vertical tube. Apply an ac voltage, of a frequency of the same order as the natural frequency of the rod, to a fine wire coil wrapped around its lower end. When a ball is placed on top of the rod, it will start to bounce. Explain and investigate this phenomenon.
Referenzen Referenz einreichen
- Vorführexperimente, Videos
Bouncing ball and dynamic chaos
Basic excplanation and presentation of the phenomenon (in russian!).
Homemade ultrasonic transducer
Constructing of a simple transducer. During the oscillation of the rod, the balls in the tube are jumping.