Vector acoustic intensity around a tuning fork

Daniel A. Russell, Justin Junell, Daniel O. Ludwigsen

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The acoustic intensity vector field around a tuning fork is investigated. Theory for a longitudinal quadrupole source predicts a well-defined transition between near-field and far-field, with significant circulation of sound energy in the near-field. Vector components of the time-averaged intensity were measured using a two-microphone intensity probe and found to agree well with predictions from theory. The vector intensity map is interpreted, and shown to provide useful information about the near-field of an acoustic source.

Original languageEnglish (US)
Pages (from-to)99-103
Number of pages5
JournalAmerican Journal of Physics
Issue number2
StatePublished - Jan 22 2013

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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