Northwestern Physics Demos                                 Go back to Sound
  
DCS# 3D32.50NWU# S-41Location:    7 A 2
title: Boomwhackers
aka: Boop tubes

Description:
   A set of tubes cut to length to sound a C diatonic scale then struck against another object (lecturer's head works well).  High C and low C are about 2:1 in length.
  When open at both ends the tubes are half wave resonators.   When the black cap is attached to one end, it bcomes a quarter wave resonator, and the tone drops an octave.

Question:
   What is the length ratio for the G tube (the fifth)?

Would this work on the moon?
pix of set up