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3D30.70 - Hoot Tubes

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​3D30.70 - Hoot Tubes

Preview
SelectSelected
Title3D30.70 - Hoot Tubes
Objective

Demonstrate standing sound waves in air which are caused by convection currents.

StatusAvailable
Assembly Instructions

Instructions
A metal/cardboard tube has a 'block' of metal screen placed inside it a short distance from one end (~1/5 L). The tube dimension ratios must fall near: Diameter = L/9. Place the tube over a burner to heat up the screen, allow the screen to become cherry red, then remove the tube from the burner. With the tube in a vertical position the cooling screen sets up a sound vibration. Turn the tube horizontally and the sound stops. Turn the tube vertically again and the sound continues.


Setup Time5
Operation Time5
Preview Time5
Operation Instructions
ExportableNo
Demo on DimeNo
PIRA 200Yes
Export Instructions (if different)
HazardsNone
Analysis/Information
Category3 Oscillations
Subcategory3D - Instruments
Keywordsrijke tubes, rikki tubes, rijkee tubes, convection currents, chimney effect
Construction Information
 
  
  
hoot tube - big red, with base
1
hoot tube - small
1
meker burner
1
propane
1
lighter
1