What do puzzles, gymnastics, writing and using maps all have in common? They all rely on people’s ability to visualize objects as they spin, flip or turn in space, without physically moving them. This ...

In Adobe Illustrator, rotating objects so they appear at any angle between 360 and -360 degrees adds flexibility to the techniques you can use to transform artwork. Illustrator offers you many ways to ...

Causal perception refers to the remarkable ability of the human visual system to infer causal relationships from dynamic interactions between objects. When witnessing events such as a ball being ...