What property of form is defined by its degree of concentration and stability, which may be static or dynamic?

The property of form that is defined by its degree of concentration and stability, which may be static or dynamic, is referred to as visual inertia. This term encompasses how a form maintains its presence and structure in space, whether it appears stable and solid or more fluid and changeable. Visual inertia is essential in architecture as it affects how viewers perceive a building or structure, influencing feelings of balance, weight, and movement.

A high degree of visual inertia typically indicates a form that appears stable and grounded, while a lower degree can suggest motion or a more transient quality. This property is vital in architectural design, as it can help convey the intended message or character of a space. For instance, large, solid structures might project a sense of permanence and strength, whereas lighter, more transparent forms can evoke feelings of lightness and movement. Understanding visual inertia allows architects to manipulate perception strategically within their designs.