Diagonals, the middle [[perpendiculars]], the [[Centre (geometry)|center]] and the [[corner]]scorners of a square are known to comprise the force lines in a square, and are regarded as more powerful than other parts in a square.<ref>Arnheim, R. (1954). Art and visual perception: A psychology of the creative eye. Los Angeles: University of California Press.</ref> To what extent these findings can be applied on [[rectangles]], such as photographs in ratios of 4:3 and 3:2, has not yet been researched. Apart from visual [[experiment]]s that support the theory of the DM, there are no known scientific sources that can theoretically confirm the DM.
