WordNet
n. a differential equation that describes the passage of harmonic waves through a medium
Wikipedia
The wave equation is an important second-order linear partial differential equation for the description of waves—as they occur in physics—such as sound waves, light waves and water waves. It arises in fields like acoustics, electromagnetics, and fluid dynamics.
Historically, the problem of a vibrating string such as that of a musical instrument was studied by Jean le Rond d'Alembert, Leonhard Euler, Daniel Bernoulli, and Joseph-Louis Lagrange. In 1746, d’Alembert discovered the one-dimensional wave equation, and within ten years Euler discovered the three-dimensional wave equation.
Usage examples of "wave equation".
It has to do with the renormalization problem and the existence of multiple solutions to the Schroedinger wave equation.
It can evolve continuously and predictably in time in the manner described by its differential wave equation, or alternatively, it can interact with the wave function of another object, such as when an electron interacts with a measuring instrument, in which case the change is discontinuous and the result will be one of a number of discrete possible outcomes, each with a given probability.
On the far wall, that was surely a wave equation, and what part could wave physics play in chemical science?