This book has been written primarily for students who have a fairly substantial mathematical background. It focuses on teaching students in bioengineering and environmental engineering who have not had such exposure to mathematical concepts.

The book:
-- Includes practical algorithms on CD-ROM for forward simulation and inversion of wave propagation in 2D.
-- Discusses in clear terms the mathematical preliminaries that are required for a proper understanding of the inversion/imaging problem, as they are required.
-- Includes careful discussion of the case of acoustic wave...

During the last few years, considerable interest has been focused on the phase that waves accumulate when the equations governing the waves vary slowly. The recent flurry of activity was set off by a paper by Michael Berry, where it was found that the adiabatic evolution of energy eigenfunctions in quantum mechanics contains a phase of geometric origin (now known as Berry's phase') in addition to the usual dynamical phase derived from Schr dinger's equation. This observation, though basically elementary, seems to be quite profound. Phases with similar mathematical origins have been identified...