Visual inertia
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In theory of architecture, visual inertia (also known as visual weight) is a characteristic of perceived concentration and stability of an architectural form. The impression of visual inertia depends on the shape of the form and its orientation with respect to the ground plane. It can be affected by the line of sight.[1]

The concept was initially proposed by Rudolf Arnheim as "visual weight". A form with low inertia (like the Museum of Modern Art in Caracas) creates an appearance of movement due to its weight.[2]