Psychoacoustic Vibration Transducer

Purpose

To illustrate resonance by trying to trick your students.

Equipment

Psychoacoustic vibration transducer, as photographed.

Suggestions

This device really blows away younger students.

Images

g2-07

Description

When a group of people concentrate on one of the pendula, held as shown by the instructor, their psychoacoustic brain waves rapidly become in phase, producing enough mechanical energy to make only that pendulum oscillate. Although there may be alternative explanations of this device which make use of the concept of driven resonance, many people continue to believe that brain waves can cause this very startling effect.

References

Lecture Demonstration Analysis Sheet.