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3B40.15 - Doppler Whistle

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​3B40.15 - Doppler Whistle

Preview
SelectSelected
Title3B40.15 - Doppler Whistle
Objective

Demonstrate the Doppler effect with a piezobuzzer.

StatusAvailable
Assembly Instructions

Instructions
The Doppler effect apparatus consists of a small piezobuzzer connected to a 9V battery on the end of a string which can be rotated by hand. For comparison, the apparatus may be operated vertically.

Setup Time4
Operation Time5
Preview Time2
Operation Instructions

Operation Steps
1   connect the whistle to the battery
2   swing the whistle over your head in a circular pattern

ExportableNo
Demo on DimeNo
PIRA 200Yes
Export Instructions (if different)
HazardsNone
Analysis/Information
Category3 Oscillations
Subcategory3B - Wave Motion
Keywordssound waves, Doppler shift
Construction Information
A tuning fork on the end of a string will also work, but sound does not last long.  Piezobuzzer is a better way to produce the pure tone.
 
  
  
Doppler whistle
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