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H3-12: ROARING TUBE - 4 FT 9 years 7 months ago #823

  • zzfixk23
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ID Code: H3-12
Purpose: Demonstrate standing sound waves in air excited by convection currents.
Description: A switch is held closed, activating a nichrome wire coil in a vertical glass tube, leading to a very loud roar at about 130 Hz, the fundamental frequency of a four-foot air tube. This is the classic Rijke tube demonstration with an electrical heater replacing a gas burner and screen as the source of the convection currents.
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Last edit: by zzfixk21.

H3-12: ROARING TUBE - 4 FT 9 years 2 weeks ago #1634

  • lecdemhelp
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H3-12
See the Physics Question of the Week for 9/8/2014 for an example of how this demonstration can be used in class interaction and discussion: lecdem.physics.umd.edu/question-of-the-week-archive.html

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