Beats  - Organ Pipes

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 Code Number :   3B60.15  

Disclaimer:

Reprinted by permission of Dick Berg, University of Maryland, for use on this website.

The demonstrations contained and referenced herein are listed for the purposes of cataloging and describing physics demonstrations which should be conducted only under the direction of a trained instructional support professional or physicist. These demonstrations are not presented for the purpose of being conducted by persons unconnected to this Facility and/or persons not consulting with or being supervised by the recognized instructional support professional or physicist and his/her staff. The University is responsible only for those demonstrations carried out using its own equipment using established safety and scheduling policies, and bears no responsibility for those choosing to use this source material for their own purposes. All demonstrations described and contained herein are public domain, and can also be found in reference materials in libraries, bookstores, and electronic sources.

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Condition :   Good  
Principle :   Constructive & Destructive, Interference of Sound Waves   
Area of Study :  Acoustics  
Equipment :   Organ pipes (wooden), Slide whistles (pair, mounted).

Procedure :   Take the two matched organ pipes and set them to the same frequency. Using a gentle air flow, change the plunger distance in one of the tubes and listen to the beats. The whistles are used exactly like the organ pipes described above.  
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   References

Niran Charoenlu, "Easy Beats", TPT, Vol. 35, # 8, Nov. 1997, p. 490. 



Mail Questions and Comments to:  Dale Stille