👉 "Cortopy" is a term used in physics and engineering that refers to a type of fluid flow phenomenon where a flow exhibits a sudden decrease in velocity or pressure as it approaches a steady state. This phenomenon occurs when there is a sudden change in the direction of motion, usually due to an external force such as a shock wave. The term "cortopy" was coined by physicist and engineer Robert H. Courant in 1906 to describe this type of flow behavior.
