It seems that anytime any innocent asks " what is lift?"
the urge is to trot out all the old explanations of on various ways of measuring lift .-or the efficiencies of lift.
The museum did it right - tho they over did it a bit -in my book
A wing is just a plate travelling at an angle which produces a pressure difference -
specifically a higher pressure below and lower pressure above the wing -
How it does it - can and does fill reams . most of which would put the casual observer to sleep. (a better use of their time)