Assertion: airfoil's pressure | /r/CapableOf | act on the airfoil
Facets:
Source sentences:
text: The lift force arises because the speed at which the displaced air moves over the top of the airfoil (and over the top of the attached boundary layer) is greater than the speed at which it moves over the bottom and because the pressure acting on the airfoil from below is therefore greater than the pressure from above.