It is a foundational principle of animation where the shape of an object changes to simulate the effects of inertia and weight. For instance, a bouncing ball will elongate as it falls and flatten upon impact, conveying speed, momentum, weight and flexibility. This exaggeration of form adds dynamism and a sense of life to animated movements.
The technique is crucial for creating convincing and engaging motion. By adhering to the principle, animators can suggest solidity, weight, and impact, resulting in a more believable and appealing visual experience. It has been an integral component of traditional animation since its inception, greatly influencing the development and stylistic choices within the field.
