It's called the Magnus effect [1]. I learned about it from my wife, who learned about it when she did a tennis instructor course. [1] https://en.m.wikipedia.or

It's called the Magnus effect [1]. I learned about it from my wife, who learned about it when she did a tennis instructor course. [1] https://en.m.wikipedia.org/wiki/Magnus_effect https://en.m.wikipedia.org/wiki/Magnus_effect