This creates a low pressure area over the long edge of object as a result a low pressure region is formed over the aerofoil and a high pressure region is formed below the aerofoil, it is this difference in pressure that creates the object to rise
This creates a low pressure area over the long edge of object as a result a low pressureregion is formed over the aerofoil and a high pressure region is formed below the aerofoil,it is this difference in pressure that creates the object to rise