Vittoria has grown up in the digital age. The movies her parents play are all on DVD. In her elementary school's health class, the teacher shows a movie on an old movie projector. When it's over, Vittoria helps the teacher take the reels off the projector and put them in their cases. She notices as she does so that the video tape is actually thousands of tiny still images. She is bewildered and wonders how still images can create the illusion of movement. The principle behind motion pictures is

Question

Quizplus · Accepted Answer

The principle behind motion pictures is apparent motion, which is the perception of movement when there is only a rapid succession of still images. This is achieved by showing a sequence of still images at a certain rate, typically 24 frames per second, to create the illusion of movement. This is the fundamental principle behind motion pictures and animation.

Vittoria Has Grown Up in the Digital Age