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HomeG. Vibrations And Mechanical WavesG2. Resonance And Coupled OscillationsG2-07. Psychoacoustic Vibration Tranducers
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
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.
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See pagesg1. simple harmonic motion
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See pagesg2. resonance & coupled oscillations
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See pagesg3. mechanical waves one dimensional
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See pagesg4. mechanical waves two dimensional
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See pagesg1. simple harmonic motion
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See pagesg2. resonance & coupled oscillations
-
See pagesg3. mechanical waves one dimensional
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See pagesg4. mechanical waves two dimensional
Physics Lab Demos