Cellular automata are collections of cells arranged in some manner such that each cell contains a value that is updated from generation to generation according to a local rule. The Game of Life [1-5,7,15] is perhaps the best known cellular automaton. It is based upon a rectangular arrangement of cells that are either 0 or 1, along with simple rules of evolution: if a cell is 0 and has exactly 3...

The phase jumps dynamics in a photosensitive BelousovZhabotinsky reaction has been studied. It was found that an initially inhomogeneous phase distribution evolved to a homogeneous one, so that the phase at phase-lag points rises to the value at phase-lead points. A steep phase distribution was shown to become smoother in the course of time, inducing a dephasing wave which restores the system t...

Using an open-flow reactor periodically perturbed with light, we observe subharmonic frequency locking of the oscillatory Belousov-Zhabotinsky chemical reaction at one-sixth the forcing frequency (6:1) over a region of the parameter space of forcing intensity and forcing frequency where the Farey sequence dictates we should observe one-third the forcing frequency (3:1). In this parameter region...