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Hoot Tubes
# 3D30.70


Description: Several tubes are available. One Al. tube has wire screens near one end. Hold the tube over the burner so that the screen is in the flame. Heat until the screen glows. The tube hoots when it is removed from the flame. The sound stops when the tube is held horizontally. The other tubes only sound when over the flame.

Instructions:

Purchased/Built: built

Setup Time: 5 min

Quant. in Demo Room: 2

Demo References
The Video Encyclopedia of Physics Demonstrations Disc 11-07 Two metal tubes and a glass one.
Sutton S-61 Hints for making a singing tube work with only flame excitation.
Sutton S-62 Singing tubes excited by hot gauze.
Freier and Anderson Se-5 A Bunsen burner heats a screen in the bottom of a large open tube.

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