Light moves in a straight line, as any physics student is aware. But now, scientists have demonstrated that light can curve without any outside help.
Although the researchers claim it might be used in real-world applications like remotely controlling items with light, the result is essentially an optical illusion.
The main reason why light moves in straight lines are because it is a wave and prefers to travel the smallest distance between the two points. Light, however, can diverge from a straight trajectory when it strikes certain obstructions. Diffraction is a popular name for this phenomenon.
Light is frequently considered to move in a straight line since diffraction has such a negligible effect in the real life.