3B40.10 - Doppler Buzzer

Doppler Buzzer

Click here to see movie

PIRA Classification: 3B40.10

Description: A buzzer and battery are tied to the end of a long string. To start the buzzer, connect the battery. Swing the buzzer around your head in a horizontal fashion.

Special Instructions: If the buzzer is swung in a vertical circle (parallel to the lecture bench), one will hear the same thing. This is due to echoes on the room.  Do not claim that one will NOT hear the effect if the demo is performed in this manner.

Condition: Ok

Setup time: 1 minute

Safety Issues: None