Elements of Architectural Design: Sensory
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Light and dark are relative perceptions of light. Architects use the concept of light and dark as they create visual interest on a building by choosing shapes that create a sensation of depth. When some shapes stick out, they leave others in shadow. Narrow openings often appear dark, as in a tunnel, and broad, flat spaces look light. Materials can be used to vary the light quality of a building. For instance, a band of tinted windows gives the illusion of a dark space wrapping around a building.