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3B40.10 - Doppler Effect - Buzzer and String
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Code Number: 3B40.10
Demo Title: Doppler Effect - Buzzer and String
Condition: Excellent
Principle: Doppler Effect on Sound Waves
Area of Study: Oscillations & Acoustics
Equipment:
9 Volt Battery Tied to a String, Piezo Buzzer to Attach to 9 Volt Battery, and Foam Ball.
Procedure:
Attach the Piezo buzzer to the 9 volt battery that is tied to the string. Swing the unit overhead and listen to the effect. You can also put a battery into the foam ball unit and either swing that around overhead or toss it back and forth across the room.
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