Flip Book
Background
A flip book is a simple form of animation consisting of a series of drawings, or photographs, that when "flipped" through by the viewer appear to create the illusion of motion. A flip book is sometimes called a "flick" book or "flicker" book. When each page is viewed seperately, the characters or designs stand still. But when the viewer flips through the pages with their thumb, the characters and designs seem to come to life before their very eyes. As you have probably figured out already, the principle behind this magic is the "persistence of vision."
Each picture has a subtle difference from the previous. As the user flips through the book at a fast rate, the users eye catches the change and the brain interprets it as motion. If you go through the flip book slowly, the subtle changes in the image may be nearly unperceivable. The trick is to get the right frame rate.
Flipbooks were popularized in the early 1900's by the Crackerjack company that gave them away as in-box prizes. In the 1920's they were used to teach dance steps - an early form of the "educational movie".
Flipbooks have been an important tool for the teaching of animation and remain so today. The flip book is a simple way for you to learn to create the illusion of animation. It is the foundation of animation in motion pictures, computer generated gif animations, and flash animations. An idea for animation can be quickly tested using the flipbook technique. Flipbooks stories are never very long and usually have a single objective that can best be put across short animated movies. Flipbooks are a true form of micro-cinema.