Kármán–Tsien theorem

The Kármán–Tsien theorem relates to the physics of objects moving through fluids, like air or water. It explains how adding a moving object (like an aircraft wing or a boat) alters the flow of the surrounding fluid, creating forces such as lift or drag. Essentially, it connects the behavior of the flow in a local region around the object to the overall flow pattern far away. This understanding helps engineers design vehicles and structures that efficiently interact with fluids, ensuring better performance and safety by predicting how flows will change when objects are in motion.