Rhythm



====Rhythm in visual arts is an attribute of any object that is marked by a systematic recurrence of elements having recognizable relationships between them. In Architecture, much of the effects of a building will depend on the harmony, the simplicity, and the power of these rhythmical relationships.====

====There are many types of rhythm which are of special importance in buildings. First, there is the repetition of shapes. Second, there is the repetition of dimensions. A third and more complex type of rhythm is based on the repetition of differences. In this rhythmical series, the ascending and descending progressions are built up from small to large and to small again.====

====Also rhythms may be indefinite and open or definite and closed. A mere repetition of similar units equally spaced and without a defined beginning or a defined end is called an open rhythm. Also the rhythms can be closed by changing the shapes of the units at the ends or by changing the size of the units at the ends.====

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====The spiral is one of the most rhythmical of forms because of its combination of repeated curves around a focus and the continual progressive change in the radius of the curvature. The fact that the spiral finally winds around to a point of minimum curvature gives it a powerful close.====

====The Rhythmical relationships arise simply and naturally from constructive and functional necessities: controlled and orchestrated by the creative imagination, they become one of the chief elements in architectural beauty. Modern architecture, like modern music, varies in its rhythmical ideals from the most clear-cut and regular rhythms to those in which there is a search from such free and so-called natural rhythms that the rhythmical basis is almost entirely lost and the result appears, to many people, amorphous and without meaning.====