rhythm - A visual tempo or beat. The principle of design that refers to a regular repetition of elements of art to produce the look and feel of movement. There are 5 different methods of showing rhythm; Alternating, Flowing, Progressive, Random, and Regular.
Alternating rhythm uses 2 or more interchangeable patters or designs that are repeated throughout a piece. In this piece, the same design is used, but the use of different colors creates an alternating rhythm.
Flowing rhythm is a rhythm in which movement is shown, most often with organic shapes. This piece displays flowing rhythm because the waves (organic figures) are shown to be moving repetitively throughout the piece.
Random rhythm is when a picture has no pattern what-so-ever. This picture fits because everyone is set randomly, and not following a known pattern.