lift

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lift In aerodynamics, force that acts upwards on the undersurface of an aerofoil, or wing. As it travels forwards, the leading edge of an aerofoil splits the airstream. Because the upper part of the airstream is forced to travel farther, its pressure falls. The lift force is a result of the upward pressure underneath the aerofoil being greater than the downward pressure on the top. See also Bernoulli's law

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