An Inexpensive and Versatile Version of Kundt's Tube for Measuring the Speed of Sound in Air

• Pangratios Papacosta ^[1] ; Nathan Linscheid ^[1]
  1. [1] Columbia College Chicago

     Columbia College Chicago

     City of Chicago, Estados Unidos

     
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 54, Nº. 1, 2016, págs. 50-51
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Experiments that measure the speed of sound in air are common in high schools and colleges. In the Kundt's tube experiment, a horizontal air column is adjusted until a resonance mode is achieved for a specific frequency of sound. When this happens, the cork dust in the tube is disturbed at the displacement antinode regions. The location of the displacement antinodes enables the measurement of the wavelength of the sound that is being used. This paper describes a design that uses a speaker instead of the traditional aluminum rod as the sound source. This allows the use of multiple sound frequencies that yield a much more accurate speed of sound in air.