exhibit is a variation on the "Kundt's Tube" experiment
done by almost every college student. A long tube partially filled
with kerosene is stimulated with sound from a speaker at one end.
At certain frequencies (the fundamental and its harmonics) the
liquid in the tube will squirt up forming fountains at the antinodes
in the tube. The higher the frequency, and hence harmonic, the
more fountains form. This is a spectacular demonstration of resonance
in a pipe.
This exhibit also demonstrates nonlinear behavior: wave patterns
and wave formations follow definite principles, yet the latter
is the result of chaos; the drop patterns of the waves are more