In biophysics and aerodynamics, a wing is defined as a structural appendage designed to generate lift when moving through a fluid medium, such as air or water. The functional design relies on principles of airfoil geometry, where the cross-sectional shape and curvature dictate the differential pressure exerted on the upper and lower surfaces. According to principles of fluid dynamics, this pressure differential creates an upward force, known as lift, which counteracts the force of gravity. The efficiency of a wing is critically dependent on its aspect ratio, the angle of attack, and the structural integrity required to withstand varying loads, whether those loads are generated by organic flight musculature or by mechanical power sources.