Here is a close-up pic as the basketball starts making an unusual path

Veritasium who is a well known experimenter has an interesting comment pertaining to the experiment he did:

The biggest misconception about the Magnus Effect is that it is just a consequence of Bernoulli’s principle. It’s not. This can be demonstrated by varying the surface roughness of the ball. Smooth balls can actually curve in the opposite direction due to the ‘reverse Magnus effect’ because flow over one side is laminar while the other is turbulent. This is a great reference on the shortcomings of Bernoulli’s principle explanations: http://math.mit.edu/~bush/wordpress/wp-content/uploads/2013/11/Beautiful-Game-2013.pdf

Let’s watch the entire video on the next page

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