unstable wave

unstable wave

[¦ən′stā·bəl ′wāv]
(physics)
A wave motion whose amplitude increases with time or whose total energy increases at the expense of its environment.
Mentioned in ?
References in periodicals archive ?
An important factor in conducting the experiments is selection of the amplitude of the pressure disturbance such that the linearly unstable wave reaches its saturation amplitude sufficiently prior to the die exit so it can undergo a supercritical bifurcation near the exit of the die that would result in an interfacial wave with a sharp front and a gradual tail (i.