Why is a popular explanation of airplane wing lift wrong?
A popular story says two air parcels separated at the front of a wing must reunite behind it, forcing the upper parcel to hurry. That reunion rule has no physical basis. NASA's explanation retains pressure differences and changes in airflow without making Bernoulli and Newton competing theories.
Questions you could explore
- What evidence would test the supposed reunion instead of merely repeating the story?
- How do measured airflow and pressure help explain lift without assuming the separated air parcels reunite?
Start reading
- NASA Glenn Research CenterBernoulli and Newton
Explains why air over a wing has no obligation to reunite with air that passed below it, and why pressure and momentum accounts agree.
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