Visualization is the key to understanding complex components, movements or ideas and animation is an extremely powerful and effective tool for maximizing audience comprehension. The job of an animation is to simply and accurately depict an idea or component, so that even the non expert can easily follow and understand its details. The ability to present and manipulate a photorealistic 3D object in virtual space opens up an amazing array of possibilities, which would otherwise be impossible with a physical object. The ability to rotate, section and see complex and internal movement, created to exact engineering specifications, in a virtual 3D environment is an extremely powerful tool.