Editing Magnus effect (section)

===Flow deflection===
[[File:Sketch of Magnus effect with streamlines and turbulent wake.svg|thumb|The Magnus effect, depicted with a backspinning cylinder or ball in an airstream. The arrow represents the resulting lifting force. The curly flow lines represent a [[turbulence|turbulent]] wake. The airflow has been deflected in the direction of spin. <br>Air is carried around the object; this adds to the velocity of the airstream above the object and subtracts below resulting in increased airspeed above and lowered airspeed below.]]

The diagram shows lift being produced on a back-spinning ball. The wake and trailing air-flow have been deflected downwards; according to [[Newton's laws of motion#Third law|Newton's third law of motion]] there must be a [[reaction force]] in the opposite direction.<ref name=Halliday>{{cite book

| last = Halliday
| first = David
| title = Fundamentals of Physics
| publisher = John Wiley and Sons
| edition = 3rd Extended
| date = 1988
| location = 
| pages = E6 - E8
| language = English
| quote=The result is that the wake is not symmetrical; the airflow is deflected to one side, and the sphere experiences a reaction force in the opposite direction... The direction and strength of this force will depend on the rate and direction of spin. This phenomenon is known as the Magnus effect... }}</ref><ref name=NASA>{{Cite web
| url = https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/what-is-lift/
| title = What is Lift?
| access-date = 20 Sep 2024
| author = Glenn Research Center
| language = English
| quote = Lift occurs when a moving flow of gas is turned by a solid object. The flow is turned in one direction, and the lift is generated in the opposite direction, according to Newton’s Third Law of action and reaction. 
}}</ref>