Spinning balls are difficult to hit – it may be because they are perceived by two different visual systems (Image: Design Pics Inc / Rex Features)
AN ANIMATION that sheds light on why a type of baseball pitch called a “curve ball” often fools batters has been voted Visual Illusion of the Year by the US .
One of the weapons in a pitcher’s armoury is to give the ball a spin that causes its trajectory to curve. The curve is smooth, but batters see the ball as if it is going straight and then suddenly changes direction, making it hard to hit. Now…
