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Acoustic Resonators
The Physics Teacher
  • Tom Greenslade, Kenyon College
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Recently my collection of historical physics teaching apparatus was given a group of 19th-century tuning forks on resonant boxes. Figure 1 shows the smallest fork sitting on the largest one. The large tuning fork oscillates at 128 Hz and has a resonator that is 57.9 cm long. The small fork has a frequency 10 times higher, but its resonator has a length of 11.0 cm instead of the 5.8 cm that simple scaling would suggest. How is this possible?
Citation Information
“Acoustic Resonators”, The Physics Teacher, 50, 485 (2012)