Rhythm is achieved compositionally,
- through an ordered spatial arrangement of a sequence of visually similar elements;
- in a manner which compels continuous eye flow, through the use of dynamic lines like diagonals and the periodicity of elements synchronised to eye saccades;
- at a scale which allows time for visual momentum to be established and continue beyond the image frame by the Gestalt Principle of Continuity.
Rhythm has momentum. A further compositional decision to be made is whether it should be allowed to:
- continue - giving the image a sense of suspension; or
- stop (through the placement of a dissimilar element the end of the sequence) - giving the image dynamic contrast.