Radiosity is a method used in computer graphics to simulate how light interacts with surfaces in a scene. It calculates the way light bounces off surfaces, creating realistic lighting effects. This technique helps in rendering images that look more natural by considering not just direct light, but also the indirect light that reflects off other objects. In a typical 3D environment, radiosity divides surfaces into smaller patches and computes the light exchange between them. This allows for soft shadows and subtle color bleeding, enhancing the overall visual quality. By using radiosity, artists and designers can create immersive scenes that feel more lifelike and engaging.