"Geometrical Optics in Engineering Physics" provides a concise and clear presentation of modern ray theory without the need of complicated mathematics. Comprehensive coverage is given to wave problems in engineering physics, considering rays and caustics as physical objects. Implementation of Geometrical Optics is described to applied optics, to telecommunications, radar and microwave engineering, which are just a few of the fast developing engineering disciplines based on wave physics. This monograph is also relevant to the solution of wave problems that arise in plasma physics, underwater acoustics and seismic exploration.