A zoetrope is a device that creates the illusion of motion by displaying a sequence of images. It consists of a cylindrical drum with slits cut into the sides. Inside the drum, a series of pictures are arranged in a circular format. When the drum spins, viewers look through the slits, which allows them to see the images in rapid succession, creating the effect of animation. Invented in the 19th century, the zoetrope is one of the earliest forms of animation technology, alongside devices like the phenakistoscope and the flip book. It played a significant role in the development of motion pictures and is still appreciated today for its artistic and historical value.