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Thursday, 19 June 2014 15:05

H3-13: ROARING TUBE - 8 FT

h3-13coilh3-13drawing

Additional Info

  • 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.

    Consider combing this with H3-12, and invite students to make predictions about the differences in pitch and volume.

  • Availability: Available
Read 1260 times Last modified on Monday, 14 August 2017 08:09
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