Munk's theorem

Munk's theorem states that in a multi-layer acoustic medium, waves traveling through different layers will experience phase shifts and amplitude changes. These effects depend on factors like layer thickness, density, and sound speed. The theorem helps predict how sound waves are transmitted, reflected, or absorbed across complex layered structures, which is important in fields like underwater acoustics and geophysics. Essentially, it provides a mathematical way to understand and calculate how sound behaves in layered systems, enabling better design and analysis of acoustic environments.