This course provides a detailed exploration of the physics behind Shock Wave Lithotripsy (SWL) — how shock waves are created, transmitted through tissues, and interact with stones. It covers key physical principles such as wave propagation, reflection, refraction, focal zone formation, and cavitation dynamics. By understanding these mechanisms, learners will gain insight into how energy is delivered safely and effectively to achieve optimal stone fragmentation. The course bridges basic physical concepts with clinical relevance, forming the scientific foundation for mastering advanced SWL techniques.