The Magnus effect comes into force when the aircraft starts to move forward, and the air pressure differential makes the airplane lift in the air. The technology is very similar to the way an airplane wing lifts a plane up, and a spinning cylindrical rotor can also do the job. Anton Flettner's concept is very simple to understand in the field of physics. The Magnus effect explains commonly observed deviations from the typical trajectories or paths of spinning balls in sport, notably association football, table tennis, tennis, volleyball, golf, …