An curved arrow pointing right ... It's called the Jastrow illusion. The secret? The short side of one track lays against the long side of another. Story and editing by Carl Mueller.

An curved arrow pointing right. A popular illusion online has people scratching their heads. The trick involves taking one giant chocolate bar, cutting it into pieces, and shifting them around ...

Optical illusion often leaves people confused and intrigued. The new trend on the internet asking people to “find the curved lines” is no different. Users on Twitter are sharing the posts in ...