Lecture
This lecture presents various animations illustrating shock and expansion waves, including an artificial explosion, the appearance of shock waves due to non-uniform backgrounds, and the behavior of shock waves in supersonic aircraft. The instructor explains how shock waves induce changes in air density and refractive index, leading to the visualization of shock waves. The lecture also covers the conditions necessary for shock wave propagation and the effects of shock waves on air density. Additionally, the instructor demonstrates the ignition process of rocket boosters and the formation of shock waves during rocket launches, emphasizing the importance of controlling pressure differentials to prevent structural damage. The lecture concludes with a detailed analysis of shock wave phenomena and their impact on surrounding environments.