3B60.13 - Beats - Organ Pipes
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.
- Niran Charoenlu, "Easy Beats", TPT, Vol. 35, # 8, Nov. 1997, p. 490.
- Borislaw Bilash II, David Maiullo, "You Can't Beat a Singing Rod", A Demo a Day: A Year of Physics Demonstrations, p. 221.
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