Final answer:
Bas-relief is a form of relief sculpture with only slight projection from the background, as opposed to high-relief where elements greatly project from the background creating more depth and shadow.
Step-by-step explanation:
In bas-relief, forms in the sculptural panel do not project boldly from the background, contrary to what might be implied by the question. Bas-relief, which means "low relief," is a type of relief sculpture where the projection from the background is relatively shallow. High-relief sculptures, on the other hand, feature elements that project much more from the background, creating deeper shadows and a more pronounced three-dimensional effect. Bas-relief art often adorns architectural elements and can depict intricate scenes with slight elevation from the surface, while high-relief may include elements that almost stand out as free-standing figures within the scene.
The artistic technique of creating a bas-relief involves carving where the artist cuts away the background, leaving the design elevated from the base or 'raised' above it. This allows for the creation of a three-dimensional visual effect with varying levels of depth. An example of bas-relief can be seen in the decorative schema of ancient tombs where carvings of cups, strainers, and armor are shallowly etched into the surface.
Sunken relief is another variant typically seen in the art of Ancient Egypt. Instead of projecting from the surface, figures are created with carved-in contours that delineate shapes and forms. This technique is particularly suited to environments with strong light that enhances the depth and definition of the reliefs.