Acoustic Tomography is a technique used to study the properties of materials or environments by analyzing sound waves. It involves sending sound signals through a medium, such as water or the Earth's crust, and measuring how these waves travel and interact with different structures. By examining the time it takes for the sound to return and its changes in frequency, scientists can infer information about the medium's composition and characteristics. This method is commonly used in various fields, including oceanography and geophysics. In oceanography, it helps researchers understand underwater currents and temperature variations, while in geophysics, it aids in mapping geological formations and detecting natural resources.