Lift

The aerodynamic force produced by a wing that acts perpendicular to the relative wind and opposes the weight of the aircraft. Lift is generated by the pressure differential between the upper and lower surfaces of the wing (described by Bernoulli's Principle) and by the wing deflecting air downward (Newton's Third Law). Lift depends on angle of attack, airspeed, air density, wing area, and the wing's shape (airfoil).