Description: The shadow is a visual phenomenon that occurs when an opaque object interferes with the path of light rays, creating a dark area on a surface. This effect is fundamental in rendering and graphics, as it adds depth and realism to images. Shadows can vary in shape, size, and darkness depending on the light source, the distance between the object and the surface, and the nature of the object itself. In the context of computer graphics, shadows are crucial for simulating how light interacts with objects in a three-dimensional environment. Shadows can be soft or hard, and their representation can significantly influence the visual perception of a scene. In terms of graphics, shadows not only contribute to aesthetics but also help viewers understand the position and shape of objects in space. Therefore, proper handling of shadows is essential for achieving convincing and appealing rendering, as they can transform a flat image into a rich and dynamic three-dimensional representation.