From: The Principles of Design- Rhythm Movement Main

Movement is another very important Principle of Design. Perhaps you are thinking that artworks as a rule do not actually move. You are correct, but we are talking about visual movement. Artists know that if certain Elements Of Art are used to create a Rhythm, there will be visual movement. The viewer's eye is drawn from one object to the next as they appear over and over in a piece of work. Let's take a look at an example.

Vincent Van Gogh, (Dutch) 1853-1890, Starry Night, 1889, Oil on Canvas Museum of Mopdern Art, NY In Starry Night, famed artist Vincent Van Gogh creates Movement in his sky.