Persistence of Vision is a phenomenon where the human eye retains an image for a fraction of a second after the source has disappeared. This effect allows us to perceive a series of still images as continuous motion. It is a key principle behind how we experience films and animations, as our brain fills in the gaps between frames. This concept is crucial in the field of cinema and animation, where rapid sequences of images create the illusion of movement. By displaying images at a speed of around 24 frames per second, filmmakers can effectively trick our brains into seeing fluid motion rather than individual pictures.