Zebra stripes
- removing the random variations in beta in Meindhart's system will result
in no stripes being formed.
- we can then choose certain cells, initiators, from which the stripes will radiate
- by fixing the concentrations at a cell and setting the concentration of
one chemical at that cell to be higher or lower than at the other cells,
this cell becomes an initiator
- the stripes below were generated by fixing the cells along the left side
of the grid and setting the concentration of a at these cells to be higher
than at the other cells