How Does Animation basics: The optical illusion of motion - TED-Ed Work?

When you watch animation, it’s like watching a series of still pictures come to life one after another.

Imagine you're flipping through the pages of a picture book really fast, that's how animation works! Each page is a still image, and when they go by quickly, your eyes see them as if they’re moving. That’s the optical illusion of motion, it feels like things are moving, but they’re actually just jumping from one picture to another.

Think about a cartoon character running. Each step is drawn on a separate piece of paper. When you flip through them fast, it looks like the character is running smoothly across the screen. It’s just like when you flip through a flip book, every turn makes the picture change slightly, and that trick makes things look like they're moving.

Animators use this idea to make characters talk, laugh, or even fly! They draw many small changes in each image so that when you watch them quickly, everything looks smooth. It's not magic, it’s just pictures working together like a team!