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H3-13: ROARING TUBE - 8 FT 9 years 8 months ago #824

  • zzfixk23
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ID Code: H3-13
Purpose: Demonstrate standing sound waves in air excited by convection currents.
Description: A switch is held closed, heating a nichrome wire coil in a vertical four-inch diameter galvanized steel downspout tube, leading to a very loud roar at about 65 Hz, the fundamental frequency of an eight-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.
Availability: Available

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